SECTIONAL TRANSACTIONS.—M. 401 
The fat in the milk of different breeds of cows varies in regard to the 
depth of colour produced on the same ration, though for any one breed 
there is still a correlation between colour or carotene content and vitamin A 
potency. 
If practical and economic methods of drying or ensiling (or both) can be 
developed, this should open up the possibility of feeding stock in winter, 
for production as well as for maintenance, mainly on home-produced 
foodstuffs. ‘The way in which such processes could be embodied in the 
ordinary management of grassland is discussed. 
Discussion (11.50). 
AFTERNOON. 
Visit to the Macaulay Institute for Soil Research, Craigiebuckler. 
Friday, September 7. 
Joint Symposium with Section I (Physiology, g.v.) on Nutrition in 
relation to disease (10.0). 
AFTERNOON. 
Visit to the Craibstone Experimental Farm, North of Scotland College of 
Agriculture. 
Pusiic Lecrure by Prof. J. A. S. Watson on Science and the animal 
industry (3.30). 
Saturday, September 8. 
Excursion to Collynie, Cruden Bay, Port Erroll and Grandhome. 
Monday, September 10. 
PRESIDENTIAL Appress by Prof. J. A. S. Watson on Scientific progress and 
economic planning in relation to agriculture and rural life (10.0). (See 
H. 223.) 
Sir A. D. Hatt, K.C.B., F.R.S.—The planning of agricultural production 
(10.50). 
The competition set up by intensive nationalism has destroyed the 
economic position of the British farmer. Hence the nation has abandoned 
its old policy of Free Trade and has adopted various measures for the pro- 
tection of agriculture. At the same time it is recognised that internal 
competition alone, in which imports play but a small part, may be equally 
destructive of the stability of the industry, checking enterprise and that 
development of production which is needed by the nation. This is the 
case for a planned agriculture which aims at organising the farming com- 
munity and the dependent processing and distributive trades, in order to 
extend and cheapen the output from our own land. ‘The Marketing Boards 
that have been set up for the various commodities, in virtue of their mono- 
poly, can direct the production along the lines that are most economic and 
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