48 



(3) The application of nitrogenous manure in general increased the product de- 

 cidedly, proportional to the amount of applied nitrogen. 



(4) Small or large quantities of phosphoric acid, together with weak nitrogenous 

 manuring, furnished in the form of Chili saltpeter, showed themselves of paying 

 efficacy. 



(5) With strong nitrogenous manuring neither large nor small applications of phos- 

 phoric acid brought about any action worth mentioning. 



(6) The product of grain and straw was increased in about equal degrees by the 

 artificial manuring. 



(7) The proportion of corn to straw was by thick sowing, on the average 47 to 53 or 

 1 to 1.13 ; by thin sowing, 45 to 55 or 1 to 1.22. 



(8) The harvest showed throughout a tolerably low percentage of nitrogen, in the 

 case of the straw ; not, however, an extremely low one, plainly because the rooting 

 up of the weeds and the stieugthening of the stems of the oat plant by drilling and 

 harrowing produced plants which were, on the average, poor in nitrogen. 



(9) By thin sowing the plants were somewhat richer in nitrogen than by thick. 



(10) The application of phosphoric acid alone was not able to raise the percentage 

 of nitrogen. 



(11) On the contrary, the percentage of nitrogen was essentially raised by the ap- 

 plication of nitrogenous manures. 



(12) An application of phosphate manures, together with that of nitrogenous man- 

 ures, did not aiterthe percentage of nitrogen. 



(13) The greater the harvest the greater also was the percentage of nitrogen in the 

 grain and the straw ; from this it appears that the more that was harvested, the better 

 was the quality of the product. A rational method of manuring brings about, not 

 alone greater crops, but also better grain. 



(14) The small and poorly-shaped grain harvested with the application of large 

 amounts of nitrogen, and in consequence of this somewhat stalled, possess a higher 

 percentage of nitrogen than the fully-developed grain ; they cannot, therefore, be 

 looked upon as of less value. 



(15) By au application of phosphate manure alone the percentage of oil in the 

 grain was not increased. 



(10) On the contrary, by an application of nitrogenous manure alone the oil was 

 decreased. 



(17) A weak application of phosphoric acid at the same time with one of nitrogen 

 reproduced the original amount of oil ; a stronger application of phosphate even in- 

 creased it, plainly through assistance in ripening. 



(18) The grain manured more strongly with nitrogen was on the whole somewhat 

 richer in fiber and somewhat poorer in nitrogen free nutrients than the grain manured 

 less with nitrogen and more with phosphoric acid. 



(19) By a rational method of' manuring the albuminoid content of the crop can be 

 almost doubled. 



(20) In these experiments 55 per cent, of the nitrogen applied in the manures was 

 recovered in the crop. 



Ill bis report on the work of the experiment station in 1884, Dr. 

 Maercker continues, in regard to the investigations: 



During this year the same experiments have been carried out (with oats) again. 

 It is the second year of which I here give an account, and the results of the first year 

 are completely confirmed : 



(1) That plants relatively poor in nitrogen have been obtained by drilling and har- 

 rowing. 



(*2) That thin sowing has in no case produced as much as thicker sowing. 



(3) That a nitrogenous manuring raises strongly the percentage of nitrogen in oats. 

 Further that in this year it has been found that, by manuring with phosphoric acid, 

 the albuminoids were materially decreased, although the formation of starch has been 



