BY USE OF DIFFERENT KINDS OF FOOD. 283 



The food stuffs I selected for experimenting with were 

 linseed and linseed cake, cotton seed and cotton-seed cake. In 

 order to make the results as trustworthy as possible, T used 

 these both singly and along with maize in various proportions. 

 The daily ration of each animal was fixed at 5 lbs., accord- 

 ing to the followinf^ scheme : — 



Ig l/V/ l,i.iV^ ^^J..^,, ^..^ 



The linseed was fine clean Calcutta seed, and cost £13, 10s. 

 per ton in Aberdeen, ground. It contained 40 or 50 per cent, of 

 oil. The linseed cake was prime Western Anierican, and cost 

 £8, 10s. per ton in Glasgow. It was chosen because, though of 

 good quality, it contained little oil — only 8 per cent. The cotton 

 seed was Egyptian, and cost £9 per ton in Hull. It contained 

 19 per cent, of oil. Tlie cotton-seed cake was best New Orleans, 

 and cost £7 per ton in Aberdeen. I found that it contained 

 15 per cent, of oil. The maize cost £7, 5s. j)or ton, whole, in 

 Aberdeen. It contained 5 per cent, of oil. All the foods were 

 of the best quality of their respective kinds, and perfectly fresh 

 and sound, as was testified by the smell and taste of tlie oil in 

 them when extracted by etlier. The first sup])ly of seeds I 

 took whole, the better to judge of their quahty, ;nul I liad them 

 ground by a local miller. 



