282 



t 

 amounts of nitrogen, phosphoric acid, and potash contained in the fer- 

 tilizers shows that " 70 do not reach their claim in respect to one or more 

 elements; 2 only are below guarantee in all respects. In 35 cases the 

 deficiency is counter-balanced by an excessive amount of some other 

 valuable ingredient; of the remainder many are so near as to make the 

 difiference hardly appreciable when expressed in dollars and cents. 

 While there is still evidence of irregularity in mixing and careless- 

 ness in statement of guarantee, no attempt at deliberate fraud has been 

 discovered." 



New Jersey Stations, Bulletin No. 74, October 21, 1890 (pp. 12). 



Ground bones and miscellaneous samples, E. B. Yoorhees, 

 M. A. — "The results here published complete the fertilizer work of this 

 year, and include the analyses of 31 samples of ground bone, 7 of dis- 

 solved bone, 4 of superphosphates with potash, and 6 of ashes." 



A popular description is given of the action of ground bone, the in- 

 fluence of mechanical condition on its value, and its value as compared 

 with that of complete commercial fertilizers. 



"A. study of the complete fertilizers examined this year shows that 

 the nitrogen is derived chiefly from organic materials ; that more than 

 one fourth of the available phosphoric acid is what is termed reverted 

 and similar in form to that existing in bone of the first grade ; and that 

 the average cost per pound of nitrogen is 21.8 cents, and of phosphoric 

 acid, 10.2 cents [at prices existing in New Jersey]. 



" It remains for the farmer to decide whether for his soil and his 

 crops it is always more profitable to buy nitrogen for 21.8 cents and 

 phosphoric acid for 10.2 cents per pound in the form of complete fer- 

 tilizers, when the same elements can be bought in ground bone for 12.5 

 cents and 5.4 cents per pound. In other words shall the dollar spent 

 for fertilizers buy 8 pounds of nitrogen or 4^ pounds ? Shall it buy 10 

 pounds of phosphoric acid or 18^ pounds'? * * * xhe superphos- 

 phates withi)otash are simply mixtures, and possess no special advan- 

 tages. With one exception excessive charges are made for work of 

 mixing, which the farmer is capable of doing quite as well himself." 



New York State Station, Bulletin No. 22 (New Series), August, 1890 (pp. 11). 



Pig-feeding experiments without milk, P. Collier, Ph. D. 

 (pp. 285-295). 



Results witli corn silage. — The experiments were made in response 

 to inquiries as to the value of silage for feeding pigs. Sixteen pigs, 8 

 Cheshires and 8 Duroc-Jerseys, were divided into four lots of 4 pigs, 2 

 sows and 2 barrows each, each lot being as nearly alike with regard to 

 age, condition, and average weight as practicable. "All of the i)igs 

 were given nearly enough of bran and middlings for sustenance, and 

 some were fed silage in addition as they would eat or chew over, while 

 others, at the same time, were fed in contrast corn on the cob." 



