BULLETIN No. 160. 



FERTILIZER INSPECTION. 



Chas. D. Woods, Director. 



J. M. Bartlett, Chemist in charge of Inspection Analyses. 



The law regulating the sale of commercial fertilizers in this 

 State calls for two bulletins each year. The first of these con- 

 tains the analyses of the samples received from the manufacturer 

 guaranteed to represent, within reasonable limits, the goods to 

 be placed upon the market later. The second bulletin contains 

 the analyses of the samples collected in the open market by a 

 representative of the Station. 



In the tables (pages 280 to 296) the analyses of the sam- 

 ples of commercial fertilizers collected in the open market in 

 the spring of 1908 by the Station representative are given. 



R. T. PRENTISS COMPANY'S AROOSTOOK COMPLETE FERTILIZER. 



The fertilizer supplied by this company in 1907 ran quite 

 uneven, which led to an investigation on the part of the Station 

 after the regular samples for 1907 had been collected, analyzed 

 and the results published. The results of the analyses of the 

 samples collected late in the fall of 1907 are given on page 103 

 of bulletin 153. This brand of fertilizers for 1908 was prac- 

 tically all manufactured before this investigation took place and 

 in consequence the Company arranged for the Experiment Sta- 

 tion, at the Company's expense, to sample and analyze each car 

 coming into the State, the Company agreeing to sell by the 

 analysis. The goods were thus sampled and 43 samples were 

 analyzed with the following results : 



Nitrogen, lowest 2.37 per cent; highest 3.74; average 3.19; 

 guaranty 3.29. Available phosphoric acid, lowest 4.79; highest 

 8.49; average 5.82; guaranty 6.00 per cent. Potash, lowest 

 7.21; highest 11.78; average 9.44; guaranty 10.00 per cent. 



