338 



BOARD OF AGRICULTURE. 



intelligent appreciation of their mode of action, induced me 

 to undertake their examination, and to enter my results for 

 the benefit of others here on record. 



I. 



Ward's 



Co., 



II. 



Ward's Carrot- Fertilizer, manufactured bg the Waj-d's Fertilizer Co., 



Boston, Mass. 



(Mr. John E. Read of South Amherst, Mass.) 



Per cent 



Total phosphoric acid .42 



Total potassium oxide ...... .18 



Total nitrogen Traces. 



Calcium oxide (lime) 19.45 



Magnesium oxide .90 



Sodium oxide 6.61 



Sesqui-oxide of iron 1.18 



Sulphuric acid 33.07 



Chlorine 5.14 



Insoluble matter (in diluted acids) . . . 11.84 



Moisture at 100° C 5.36 



Loss by calcination at red-heat .... 15.70 



The fertilizers (I. and II.) consisted of a coarsely-ground 

 mass of gray and white substances, in which large pieces of 

 gypsum, of charcoal, and of white acid salines, could be readi- 

 ly distinguished. The strength of the bags in which they 

 were packed had apparently greatly suffered from the acid 

 re-action of the material. About one-half — from fifty to t7ixty 



