206 Miiinnlmi Jar lloi/ 



values of ililleieiit pastures, but it is not unreasonable to expect that 

 in the case, such as the present, of adjoining plots on a small area of 

 one and the same field, the indications will be more reliable. 



The produce of some of the plots was sampled and analysed by 

 Bond in 1909. Two years later (1911) the crops on ail the plots were 

 again sampled and analysed by us. On five plots further saiiipliiif; 

 and analysis took ])lace in 1914. In every instance the samples were 

 taken at the time of cutting, and dried entirely under cover. The 

 results of the analyses are sunmiarised in Tal)le 1\'. 



The results of the thiee series of analyses show fair agreement 

 in general, the following points being common to each : 



(1) With but one exception (1911 Crop, Plot 7) the proportion 

 of crude protein is greater on the manured than on the unmanured 

 plots (1 and 13). 



(2) The enrichment in crude protein is greatest on those plots 

 where nitrogenous manure alone was applied (Plots 11 and 12). 



(3) The proportion of crude protein is lower on the plots manured 

 with nitrate of soda (7, 9, 11) than on the corresponding ammonia 

 plots (8, 10, 12). 



(4) The differences above referred to are due rather to the non- 

 protein than to the true protein fraction of the crude protein. 



(5) The proportion of crude fibre is markedly higher on the dunged 

 plots than on the rest. 



(0) The lowest proportion of crude fibre and tlie highest proportion 

 of nitrogen-free extractives ("soluble carbohydrates") are found on 

 the plot receiving a "complete" mixture of artificials including nitrogen 

 in the form of nitrate of soda (Plot 7). 



(7) The proportion of ash in the hay grown with nitiate of soda 

 (7, 9, 11) is higher than that in the hay fiom the corresponding ammonia 

 plots (8, 10, 12). 



In interpreting the results both here and elsewhere it must be 

 borne in mind that the hay on the dung plots was dead ripe at the time 

 of cutting. This reveals itself more jjarticulariy in the increase of crude 

 fibre. J^ate cutting and the presence of a relatively large proportion 

 of tall, coarse grasses and weeds all tend to give a hay containing a 

 high proportion of crude fibre. These are the conditions which obtained 

 on the dunged plots. 



In assessing the nutritive value of the produce from each plot it 

 is necessary to take into account the digestibility of the material. 



