208 Agricultural Education Exhibition, Doncaster, 1912. 



was quite altered in texture, being rendered much more open 

 and porous. 



The exhibit embraced the continuation of previous work, 

 including illustration of the effect of magnesia on the wheat 

 plant, and o£ the effect on root growth of (a) heating soil, (b) 

 acidity, (c) the addition of lime and of magnesia. 



In addition there were the usnal exhibits of plans and 

 photographs of the farm and of special plots, and of the 

 collected results set out in tabular form. 



The Botanical Department of the Society was responsible 

 for a valuable exhibit which included cultures showing the 

 effect of artificial manures on the extent to which wheat suffers 

 from rust and mildew. Specimens of Professor Biffen's new 

 varieties of wheat and barley were also exhibited. 



The Midland Agricultural and Dairy College, Kingston, Derby. 

 —The exhibits from this institution included a fine collection 

 of cheeses of all sorts, made at the College — Cheddar, Derbj^, 

 Leicester, Cheshire, Caerphilly, and some of the continental 

 soft cheeses. Perhaps the most interesting feature of the stall 

 was that dealing with the manuring of grass-land for milk. 

 These experiments have been carried on now for some years, 

 and although the dressing of lime, superphosphate, and sulphate 

 of potash recommended is very expensive, the effect on the 

 milk-yield is little short of extraordinary. Other exhibits 

 included cultures of various organisms, both useful and injurious 

 in the dairy ; the composition of milling offals and their 

 adulterants ; and diagrams and photographs illustrative of 

 experimental work in several other directions. 



The College of Agriculture and Horticulture, Holmes Chapel, 

 Cheshire. — An interesting series of specimens showing wart 

 disease (black scab) in potatoes Avas shown by this College, with 

 trays showing the distribution of varieties of potatoes said to 

 be immune. An insect pest which has been the cause of 

 serious losses in the oat crop, the frit fly, was exhibited, with 

 examples of damaged plants. This pest has been very prevalent 

 in many districts during the past year or two, and the damage 

 d(me by it is not infrequently confused with that due to 

 eelworm. Plots of turf, showing the effect of different 

 manures, were exhibited, and also a series of veterinary 

 specimens illustrative of the diseases of farm stock. 



The University of Leeds and the Yorkshire Council for Agri- 

 cultural Education. — This exhibit, which occupied a separate 

 pavilion at some little distance from the other Agricviltural Edu- 

 cation exhibits, may not unfairly be described as the most im- 

 portant both in point of view of size and also of scope. Specimens 

 were shown covering the whole range of the agricultural work 

 of the University, and they aroused very considerable interest 



