13 



ammonia salts show a material increase in cost as compared with 

 the previous year. 



The above schedule of trade values is based upon the condition of 

 the fertilizer market in centres of distribution in New P^ngland dur- 

 ing the six months preceding March 1900 and refers to the current 

 market prices of the leading standard raw materials which enter 

 largely into the manufacture of our commercial fertilizers. 



The following is a list of such materials : 

 Sulphate of Ammonia, Dissolved bone, 



Nitrate of Soda, Ground phosphate rock, 



Azotiue, Acid phosphate, 



Dried blood, Refuse bone black, 



Cotton seed meal, High grade sulphate of potash, 



Castor pomace. Muriate of potash. 



Linseed meal. Sulphate of potash-magnesia. 



Dry ground fish, Kainit, 



Bone and tankage, Sylviuite, 



Dry ground meat. Crude saltpetre. 



Valuation. The approximate value of a compound fertilizer or 

 any material used for fertilizing purposes is obtained by calculating 

 the value of each of the three essential elements of plant food (nitro- 

 gen, phosphoric acid and potassium oxide, including the different 

 forms of each wherever different forms are recognized in the table), 

 in one hundred pounds of the fertilizer and multiply each product by 

 twenty to change it to a ton basis. The sum of these values will 

 give the total approximate value of the fertilizer per ton at the prin- 

 cipal places of distribution. 



V. 



LAWS FOR THE REGULATION OF THE TRADE IN COM- 

 MERCIAL FERTILIZERS IN MASSACHUSETTS. 



An Act to regulate the sale of commercial fertilizers. 

 Acts for 1896, Chapter 297. 

 Be it enacted., etc., as follows : 



Section 1. Every lot or parcel of commercial fertilizer or fertil- 

 izer material sold or offered or exposed for sale within this Com- 

 monwealth shall be accompanied by a plainly printed statement, 

 clearly and truly certifying the number of net pounds of fertilizer in 



