A rooftop terrace on the National Museum of Scotland  in Edinburgh, holds a series of four sculptures made of massive sandstone blocks.
The work is Hutton Roof, Split and carved sandstone by Andy Goldsworthy, 1998. The words on the explanatory panel tell the story.
“The four sandstone sculptures behind you, placed as the four points of the compass, evoke the theories of the pioneering Edinburgh geologist James Hutton. The sandstone, from Locharbriggs quarry, Dumfriesshire, is the now compacted sands of a 270 million-year-old desert.
Each stone has been split along its natural grain into five slices, with a hole carved into each slice. When each stone is reconstructed, the holes align to draw the eye of the viewer down into the centre, subliminally back through the layers of time.”
The photographs in the panel above show the Hutton Roof description, two of the blocks and three views from above the blocks down through ‘time’. The one at the top of the page was taken across the top of one block, in slanting sunlight to show the surfaces.
 National Museum of Scotland, Chambers St, Edinburgh www.nms.ac.uk.
The mixed cereal-pulse crop known as mashlum. Decline after 1950 yet still grown in a few fields. The question of crop mixtures in prehistory.
An earlier article Mashlum – a traditional mix of oats and beans  suggested that the mixed cereal and pulse crop known as mashlum had died out in Scotland but no ….. an email from a farmer in Fife, Douglas Christie, confirmed that it was still grown on his farm. Here is a photograph.
Earlier we had related an account from 1925  on the difficulties of growing mashlum and also the benefits. Mr Christie reports that the mixture worked very well, that chemical and nitrogen fertilizer costs were drastically reduced, but that he had to pick the field carefully as some weeds would be difficult to control.
He also overcame some of the problems in sowing and harvesting a mixture reported in earlier accounts from the 1920s. He has a drill that can sow (direct drill) the two crops at the same time and a grain dresser that can easily separate the two crops after harvest,
Since hearing from Douglas Christie, the Living Field has noticed on Twitter that several farmers in the south of the UK are also working with mixed cereal-pulse crops. A further question arose in correspondence as to their antiquity.
Mashlum in the crop census
That mashlum merited a separate chapter in the 1925 Farm Crops  shows how seriously it was taken. It first appeared in the agricultural census  under the heading ‘vetches, tares, beans, mashlum for fodder’ between 1902 and 1919. The category in the census then changed slightly to ‘vetches and mashlum for threshing’ which declined to a low point in 1939 (grey symbols in Fig. 1). Presumably the need for fixed nitrogen during shortages caused vetches and mashlum to increase in area almost 10 times during the war years.
Most of this increase was in mashlum, which in the 1940s and early 1950s became the most widely grown legume crop in Scotland – covering more area than beans and peas – and was listed in the census simply as ‘mashlum for threshing’ (orange symbols in Fig. 1) , that is, grown and harvested for seed. After a few years, it declined again in the early 1950s and had almost died out by 1960. In 1961, mashlum disappeared from the census and any remaining fields were combined with ‘other crops for stockfeeding’ (green symbols to the right of the trace in Fig. 1).
Fig. 1 The area sown with mashlum and related crops in the agricultural census in Scotland, 1902-1978 . Mashlum was listed as a separate item in the crop census from 1944 to 1960 (orange). Before that it was part of ‘vetches, tares, etc.’ up to 1919 (light blue-grey), then vetches and mashlum for threshing (grey). Any crops remaining after 1960 were counted as part of ‘other crops for stockfeeding’ (green symbols).
The period from the late 1950s to the 1980s was the time of rapid increase in the use of mineral nitrogen fertiliser. The cereal-pulse mix became uneconomical.
Despite its temporary revival in the 1940s, mashlum, as all other legume crops, was grown on a small part of the arable surface in the 20th century, generally less than 1% of it.
Cereal-pulse mixtures in prehistory?
A question then arises as to how old is the practice of sowing mixed cereals and pulses. The Dictionary of the Older Scottish Tongue (DOST) finds that mashlum, in the spelling mashloche, was in use more than 500 years ago , but that in itself tells little of the crop’s ancestry. Was the method handed down from earlier Bronze or Iron Age farmers to the medieval period or was it brought over by the Romans or early Christians?
The archaeological record in the north of Britain is thin on peas and beans: there is one record of field beans in Scotland – also known as horse bean and Celtic bean, now faba bean. Peas and beans appear far less frequently than cereal grains, but this difference is often attributed to the methods of cooking them: beans are less likely than grain to be charred and hence preserved. In an authoritative survey beans and cereals were examined in 75 locations in southern England .
At some archaeological sites, beans and cereals, such as emmer wheat, are found together and in numbers that suggest they were both grown as crops for food. Descriptions of the finds at Foster’s Field, Sherborne in Dorset for example, include the line that beans ‘may have been grown as a mixed crop with barley or as part of a crop rotation system’ , a statement repeated in the broader survey .
The archaeologists agree that presence itself does not mean anything definitive about how the crops were grown – whether alone, in broadcast mixtures, or in rotation or sequence. It is not hard to imagine, though, that cereal-pulse mixtures have been used from the earliest times. Imagine a household or village had some cereal and some legume seed, not enough to be sown alone, but together they would make a field.
And the same farmers would have known, as all farmers up to the mid-1950s have known, that cereal and pulses together do better on poor soil than cereals alone because of the nitrogen-fixing ability of the pulses, and if the pulse is faba bean, then also the support offered by the stronger bean stem.
Common sense tells that they would have grown mixtures but there is no definitive evidence.
 O’Brien DG. 1925. The Mashlum Crop. In: Farm Crops, edited by Paterson WM, pages 297-302, published by The Gresham Publishing Company, London.
 Crop census records for the main crops from early in the century to 1978 are available online as Agricultural Statistics Scotland from the Scottish Government web site at Historical Agricultural Statistics. Mashlum is sometimes included with other pulses and forages but is given as a separate crop for the period indicated in Fig. 1 above.
 Treasure ER, Church MJ (2017) Can’t find a pulse? Celtic bean (Vicia faba L.) in British prehistory, Environmental Archaeology, 22:2, 113-127, DOI: 10.1080/14614103.2016.1153769. An excellent paper on the occurrence of field bean in Britain.
 Jones J. (2009) Plant macrofossils. In Best J, A Late Bronze Age Pottery Production Site and Settlement at Foster’s Field, Tinney’s Lane, Sherborne, Dorset. Archaeology Data Service 2009: idoi:10.5284/1000076. Many of the source papers on the topic are only available free to academic data services, but this one is available online through the link.
Three flours that sustained life on the Atlantic seaboard for centuries. Commonly grown as a crop mixture in the field. Mixed and cooked into tasty bannocks in the kitchen. Decline to near extinction in the 20th century. Now with a great future as sustainable low-input crops, bringing diversity to the farmed landscape and healthy, nutritious food.
Peas, bere (barley) and oats have been a staple plant mixture giving protein and carbohydrate through the centuries of farming on the Atlantic seaboard. Yet in Scotland, as in much of Atlantic Europe, their role diminished within living memory.
Peas declined in area from the mid 1800s to to almost nothing in the 1930s. Bere dropped out of census records in the 1880s but was then nearly lost except in a few northern fields. Oat fell from being the dominant grain crop over the last few hundred years to covering less area than barley and wheat by 1950 . Their decline is now being reversed.
Peas as crops and food
Traditionally peas along with bere and oats, and sometimes beans, was the staple protein food of the rural working population in Scotland. They were the local pulse and grain – the sustaining combination of plants that once fed the world and still feeds large parts of it.
Fenton’s Food of the Scots  cites many records from the 1400s to the late 1800s of peas, beans and cereal grains grown alone or in mixtures. Similarly, the flours of peas, oats and bere were eaten as bread and bannocks, either as sole constituents or baked in combination.
The pulse crops were certainly recognised and widely appreciated here for hundreds of years. A 1426 Act of Parliament in Scotland stipulated that a farmer should sow 1/12 of his labour in peas , not just for protein food but to fertilise the soil with nitrogen (though the process of biological nitrogen fixation by legumes was not understood until many centuries later).
The products of peas and beans were grown locally, traded across the country or imported by sea, often from nearby Atlantic and Baltic ports. Though peasemeal was demeaned as a food of the labouring classes in some regions, the inclusion of peas in the subsistence diet was recommended by Hutchison in 1869  as contributing to a healthier and longer life for the rural worker and their family.
Decline of peas
The records cited by Fenton indicate peas as a crop and food were more important here than beans Vicia faba. Yet by the mid-1800s, that order was reversed. At the first crop census in 1854, beans occupied 6 times more area than peas . The cause of the decline of peas as a crop is suggested by MacDonald (1908) as due to ‘the extended use of potato’ in the subsistence economy  and by Porter (1925) to the replacement of pulses by clover and grass mixtures  that are better at maintaining soil fertility.
Well into the period up to the 1950s, both pulses were named individually in the census and classed as grain crops to be harvested like cereals, yet unlike the cereal grains, they continued to decline in area despite a short-lived revival in the late 1940s (when food imports and nitrogen fertiliser wererestricted).
Peas became a minor crop by the 1930s and disappeared from the annual census in the 1950s. Beans went a decade or so later. They covered too small an area to be recorded in the annual summary. They reappeared gradually from the 1960s in different forms, such as ‘vining peas’ for human consumption, but that’s another story, and despite a rise in sown area similar to that of the 1880s, peas and beans together now cover 1-2% of the cropped surface, a very low percentage.
The benefits of all three products – peasemeal, beremeal and oatmeal – to health and environment are increasingly recognised today. Here, we wonder what peasemeal-beremeal-oatmeal bannocks tasted like and decided to find out.
For much of recorded history in these islands, wheat was not as widely grown as oats and barley, and when it was grown or imported, it was more to feed the wealthy. Beremeal and oatmeal do not ‘rise’ much by themselves, so were most commonly eaten as bannocks, a form of flatbread . The flours were mixed with water, patted into a round, typically 1 to 2 cm thick, and baked on a hot surface on or by a fire.
To try out the method, flours were sourced from water-powered mills at Golspie in Sutherland and Birsay on Orkney . Then trial and error – peasemeal and oatmeal, peasemeal and beremeal and all three together, the latter preferred for the blend of tastes.
The oatmeal was medium-ground and gave some granularity to the mix. The peasemeal had a yellowish colour, while the beremeal was more of a light brown than a standard refined wheat flour. On the packets, peasemeal had a protein content of 20.4% and oatmeal (as most unrefined cereals) around 13%.
The three were placed in a bowl at about 1:1:1, or slightly more oatmeal than each of the other two, mixed into a thick paste or dough with water, turned out onto the board with a little beremeal on it to stop it sticking and then pressed into a bannock (about 10 -15 cm wide and 1 cm thick).
It took 10 to 15 minutes to cook the bannock slowly in a cast iron pan, very lightly oiled with cold-pressed rapeseed, though oiling is not essential. Heat sources tried were a modern gas stove, an indoor wood stove and an outdoor fire.
The three-meal bannock was tasty and filling, eaten with butter or marge (could try a drizzle of oil), marmite, various cheeses and dipped in soup. A satisfying experience.
Yield and environmental benefit
Pea Pisum sativum is now grown in various forms, for animal feed, for canning and freezing to feed people and as a fresh vegetable. The peas traditionally used for peasemeal or flour tended to be marrowfat or similar types, harvested when mature [but see note 4]. Peas need no nitrogen fertiliser and less pesticide than most non-legume crops.
Bere, the traditional landrace of barley Hordeum vulgare, is now grown only in a few localities, but appears to need less fertiliser and pesticide than modern two row barleys. Oats Avena sativa were overtaken by barley in the middle to the 1900s as the Scottish cereal crop of choice, but they too need less pesticide and fertiliser than barley and recently oat yields have increased to rival those of spring barley. Oat is also nutritionally superior to barleys and wheats.
Many records over recent centuries describe the growing of two or three crops mixed together in one field. ‘Mixed grains’ was recorded in the crop census for most of the 1900s, while mashlum – a mix of peas or beans with oat or barley – was common enough to be cited as a distinct crop category from 1944 to 1978 . As related elsewhere on the Living Field web site (see Mashlum – a traditional mix of oats and beans) these crop mixtures disappeared from the census records but are still grown by a few farmers who value their contribution to fertility and nutrition.
The yields, nutritional content and environmental benefit of traditional landraces and mixed grains are being researched and quantified at the James Hutton Institute, Dundee [6, 7}.
Teaching about grains, milling, flour and food at Open Days
The Living Field bought its own hand-powered corn mill a few years ago. It consist of a stone base and two grinding stones. The latter were honed by Mr Roberts from the Hutton’s workshop and the whole was supported by old tyres. Grain (in this case oats, centre top) is fed into a vertical channel in the upper stone and falls down through to the gap between the stones.
The stones are turned by the wooden rod, as shown by Mr Young and two visitors at an Open Day (this one in 2012). The grain is ground between the stones to a mix of meal and bran (the husks of the grain) which gets pushed out and collects in the stone base from where it is brushed off into a container (lower right). The meal and bran are separated by hand using a sieve (lower left).
At Living Field open days – at Open Farm Sunday for instance – visitors can see the whole process from growing the plants from seed, harvesting grain, grinding the grain and separating the meal from the chaff. Gill Banks shows how to make bread from the flour made from these ancient varieties.
Sources, references, links
 Census records for the main crops began in 1854, then continued from the early 1880s through to 1978 as Agricultural Statistics Scotland, a fine source of information. Yearbooks are available online from the Scottish Government web site at Historical Agricultural Statistics. More on the 1854 census on the LF site at Thorburn’s diagrams and Bere country.
 Fenton A. 2007. The Food of the Scots. Volume 5 in A Compendium of Scottish Ethnology. Edinburgh: John Donald. Peas, peasemeal and bannocks appear in Ch 17 Bread and Ch 14 Field crops. Fenton cites: MacDonald J (1908) Editor of Stephens’ Book of the Farm for the loss of peas in preference to potato; and Hutchison R (1869) Report on the dietaries of Scotch agricultural labourers, (Transactions of the Highland and Agricultural Society, 4th, 2, 1-29).
 Porter J. 1925. The pea crop. In: Farm Crops, Ed. Paterson WG, The Gresham Publishing Company, London.
 Sources of the meal. Golspie Mill in Sutherland makes a range of flours and meals including the peasemeal ‘made from roasted yellow field peas’ and the oatmeal used here. Barony Mills at Birsay, Orkney makes the beremeal. Barony have appeared many times on this web site e.g. at Landrace 1 – bere. Suppliers who stock these products include Highland Wholefoods in Inverness.
 The James Hutton Institute carries out a wide range of studies on pulses and grains. The nutritional and environmental properties of pulses and pulse-grain mixed crops are examined in the EU H2020 TRUE project, coordinated from the Hutton Institute and with many partners across Europe. For further info, see TRUE Project EU and articles on the curvedflatlands web site at Transitions to a legume-based food and agriculture. Contact at the Institute: firstname.lastname@example.org.
Links to related articles on the Living Field web site
The page on the Bere line (rhymes with hairline) gives links to comments, images and articles on bere barley, including our correspondent Grannie Kate‘s recipes and experiences using bere meal and our Gill and Co’s breadmaking with various ingredients at Bere and cricket.
Can we grow more vegetables? looks at the current geographical distribution and status of vegetable growing in Scotland, including areas with peas and beans. Other links to pulses include: Scofu – the quest for an indigenous Scottish tofu and Feel the pulse – our travelling exhibit on peas, beans and their products,
The Living Field web site Editor, normally averse to the alchemy and incantations of cooking (best left alone!) managed to make (and eat) bannocks from the constituents bought from the sources indicated at . Peasemeal brose is even easier – just add hot water to a couple of teaspoonfuls of peasemeal, stir and eat with toast or dips. Caution – beware the three-meal bannocks are addictive. Reconnecting with primordial tastes?
The Living Field has been studying and promoting the diversity of crops and cropping methods since its beginning over 15 years ago. The Garden displays the different crops grown since the first farmers arrived here thousands of years ago.
The Garden’s habitats also harbour and attract a range of wild plants that have themselves been nurtured and harvested in the wider landscape.
Why diversification? Many of our crops have been lost in the march to uniformity and many wild plants are threatened by loss of habitat. Plant diversity in the croplands has decreased in the last 150 years.
Yet there is a drive to reclaim this heritage, to diversify agricultural fields and landscapes for the betterment of the environment and human nutrition.
The collage above shows some of the crops and other useful plants grown in the Living Field garden in recent years. The cereals are towards the left and the legumes to the right, while the centre holds dyes, medicinals, vegetables and ‘root’ crops. [Click on the image and a larger copy will appear in a new tab.]
What does crop diversity do?
Each type of plant uses the resources of sunlight, water and nutrients to form its body, including the things we take off it as yield – grain, leaf, root and so on. Each type takes up, uses and passes on these resources in slightly different ways. They open or close channels through which the resources flow – some to us in the form of nutritious food, some to the soil and some to food webs and wildlife.
A single type of plant can open only a small number of channels – it blocks the others off. Therefore many types need to be grown together to ensure that all the channels necessary for the ecological wellbeing of the land are open and working.
Therefore as plant diversity declines, channels are closed and the ecosystem malfunctions. An example is the decline of legume crops and wild plants such as peas, beans, vetches and clovers. They fix their own nitrogen (an essential plant nutrient) and so do not need to be given mineral nitrogen fertiliser (which, apart from helping plants to grow, can be a damaging pollutant).
Is crop diversity declining?
There has been a trend in the last 150 years to reduce the diversity in crops and grass which have together sustained people here since the neolithic age 5000-6000 years ago. The changes have not been abrupt, but they accelerated after the 1950s due to the higher yields that were achievable using mineral fertiliser and pesticide.
Barley is now dominant, whereas many other types have declined or disappeared. The tuber crops such as turnips, swedes and potatoes, the legumes such as peas, beans and vetches, and the dyes and fibres have all declined in area in the last 150 years. Some such as the fibre crop, flax, or the dye plant, woad, are no longer grown.
Along with increasing use of pesticide, these changes have limited the channels through which natural resources flow to sustain the ecosystem. They have reduced farmland wildlife and in some cases endangered the capacity of soil to sustain life.
But while food security was assured in the 1960s, perhaps for the first time ever, agriculture then became geared to the manufacture of drink and animal feed, while the people living here came to rely on imports for food.
The croplands are out of balance!
Can diversity be restored?
There are increasing and welcome pressures to re-diversify agricultural land for the benefit of all forms of life that rely on it. The pressure certainly comes from many small enterprises and businesses involved in creating a sustainable and healthier food system, but pressure also comes through European Union influence.
Notably, funding from the EU has enabled researchers at the Hutton to collaborate and share knowledge and practice of diversification with scientists and innovators throughout Europe.
A series of short articles is therefore planned for the Living Field web site, covering:
the origins and decline of diversity in crops and their associated plants and animals;
the ‘channels’ by which crops and their management regulate the flows of energy and matter through the ecosystem;
the methods that can be used to restore and maintain diversity in the field and landscape.
Putting knowledge into practice on the farm
The James Hutton Institute’s farms and science have been re-diversifying agriculture for some years. In some cases, they are re-finding old ways that have been lost, an example being a crop mixture of cereals and legumes, once widely grown, and called mashlum. [See Mashlum – a traditional mix of oats and beans.]
The work and practice in crop diversification by the Hutton farms will be noted in parallel to Living Field articles on our LEAF Linking Environment and Farming web site at Hutton/learning/leaf. Links to specific web pages will be given later.
The Living Field garden will continue to grow and display many of the crops and useful wild plants that sustained people here since the last ice.