68 



Summary of Weathek Observations, April 13 to Oct. 10, 1891. 



*18'2 days. 



The light rain-fall of April and May is the chief peculiarity brought out 

 by these figures. This, combined with the frosts during the latter month, 

 had an unfavorable influence upon the crop. 



ANALYSIS OF MANURE USED. 



Moisture at 100° C, 58.18 per cent 



Phosphoric acid, .51 " 



Potassium oxide, .85 " 



Nitrogen, .87 " 



Insohible matter, 9.85 " 



This manure weighed 52 pounds per cubic foot ; and at the rate used 

 supplied therefore, per acre : nitrogen, 289.5 pounds ; phosphoric apid 

 169.7 pounds ; and potash, 282.8 pounds. It was described as " fat 

 cattle" manure, and it is the richest among all the samples of 

 manures, which have been used in these experiments that have been 

 analyzed. It apparently produced less increase in crop than "com- 

 plete " fertilizer, which supplied only about one-twelfth as much 

 nitrogen, one-third as much phosphoric acid, and two-sevenths as 

 much potash. Experiments will be continued upon this acre, and 

 the future effects of this large surplus of food applied in the manure 

 will be looked for with interest. 



RESULTS OF THE ADDITION OF NITROGEN TO 



Nothing. 



Large, bushels per acre, 29.44 



Small, " " —9.22 —1.55 8.67 



Value of net average increment, $9.35. 



Financial result, 5.35 gain 



1.33 



19 



