1913.] PUBLIC DOCUMENT — No. 31. 105 



(/) Mixed complete fertilizers. 



(1) Grades of fertilizer. 



(2) Summary of analyses and gnarantees. 



(3) (Quality of plant food. 



(g) Ground rock, mineral fertilizer or stonemeal. 



(A) Lime compounds. 



(i) Uree analyses of by-products, fertilizers and soils. 



(a) Fertilizers registered. 

 Ninety -seven manufacturers, importers and dealers, including 

 the various branches of the trusts, have secured certificates for 

 the sale of 509 diiferent brands of fertilizer, agricultural chem- 

 icals, raw products and agricultural lime in the Massachusetts 

 markets. This is IT more than were registered during the pre- 

 vious year. They ma}- be classed as follows : — 



Complete fertilizers, ......... 328 



Fertilizers furnishiuy phosjihoric aeiil and potash, .... 9 



Grouiul bone, tankage and dry ground fish, ..... 55 



Chemicals and organic nitrogen compounds, ..... 91 



Agricultural limes, .......... 26 



509 



(b) Fertilizers collected. 



An effort has l)een made to procure a representative sample 

 of every brand of fertilizer and lime which has been registered 

 in Massachusetts, and with few exceptions the effort has been 

 successful. During the early part of April, arrangements were 

 made, upon request, to sample carloads of cottonseed meal, 

 wood ashes, fertilizers and chemicals, these earlier shipments 

 being materials which were purchased for private use by some 

 of the larger consumers. Although this practice has made it 

 necessary to make a much larger number of analyses than for- 

 merly, yet it has some good features as it insures the inspec- 

 tion of a larger tonnage than would otherwise be possible, 

 besides furnishing the large consumer an analysis of his partic- 

 ular shipment. Large shipments of many private formulas 

 have been sampled upon request. 



The inspectors have, during the year, sampled about 5,600 



