1912.] PUBLIC DOCUMENT — No. 31. 51 



It is difficult to tell how large a per cent, of the total tonnage 

 shipped into the State has been sampled. An effort was made 

 at the end of the season of 1910 to ascertain approximately the 

 number of tons sold, but some of the larger manufacturers 

 refused to furnish the data. As complete and extensive a col- 

 lection as possible has been made in the limited time at our dis- 

 posal and with the means available for the work. 



During the season 116 towns were visited and 1,003 samples 

 representing 519 distinct brands were drawn from stock found 

 in the possession of 28-1: different agents, as against 897 samples 

 and 487 distinct brands collected and examined in 1910. Some 

 of these brands represent private formulas which would have 

 been sent to the station for analj^sis by the consumer had they 

 not been taken by our insi:)ectors. Arrangements can be made 

 in most cases to have large shipments of private formulas sam- 

 pled by one of our regular collectors, provided notification is 

 given sufficiently early in the season so that the various ])laces 

 may be visited while the collectors are in that vicinity. 



(c) Fertilizers analyzed. 

 Six hundred and sixty-two analyses have been made in con- 

 nection with the 1911 fertilizer inspection. The analyses made 

 may be grouped as follows : — 



Complete fertilizers, ......... 427 



Fertilizers furnisliiiig' pliosplioric aeid and potash, such as aslies, 



etc., 18 



Ground bones, tankasie and fish, ....... 73 



Nitrogen compounds, ineludins;- the mineral forms of nitrogen ; also 



the various organic forms, both animal and vegetable, . . .09 



Potash comi)onnds, .......... 50 



Phosjihoric acid comj^ounds, ........ 25 



Total, 002 



{d) Trade Values of Fertilizing Ingredients. 

 The following table of trade values was adopted by the ex- 

 periment stations of New England, New York and New Jersey 

 at a conference held the 1st of March, 1911, and have served 

 as the basis of valuing the fertilizers published in this bulletin. 

 The schedule for 1910 is also given for comparison. 



