354 TiMEHRI. 



cane at the commencement of its stage of a6live growth 

 as determined by the rainfall, requires, and can make 

 use of, full applications of a6live nitrogenous manures, and 

 that it does not require a further slow supply of nitrogen 

 during the later stages of its growth. It is noticeable 

 that the juice yielded by the canes receiving their 

 nitrogen partly in the form of organic matters was never 

 as rich as that yielded by the aftive nitrogenous 

 manurings. This may of course be due to some other 

 causes, but to my mind it suggests that the slow supply 

 of nitrogen retarded the growth and ripening of the 

 canes to an extent that was not desirable, and this opinion 

 was borne out by the similar results given by the yields 

 obtained from the fields heavily manured with pen 

 manure. 



It is of some interest to ascertain the proportion of 

 the nitrogen added in the manure which was recovered 

 in the produce. From experiments made, we have 

 ascertained that of lOo lbs. of total produce of the sugar 

 cane, 17 lbs. will consist of fallen or stripped leaves 

 (calculated in their green state), and from this and the 

 weights of canes and cane tops yielded, we find that the 

 average total produce without nitrogen amounted to 

 80,222 lbs., with 40 lbs. of nitrogen to 95,566 lbs. and 

 with 80 lbs. to 103,455. Analyses showed that the 

 produce without nitrogen contained '093 per cent, of 

 nitrogen, that with 40 lbs. 'oSg per cent., and that with 

 80 lbs. "102 per cent. The produce, grown without 

 nitrogen, therefore, contained 74*7 lbs. of nitrogen, that 

 grown with 40 lbs., 85" i lbs., and that with 80 lbs. 105*5 

 lbs. We have then on an average that where 40 lbs. of 

 nitrogen had been supplied as manure, 10*4 lbs. were 



