32 



No explanation was received from the company when the 

 analysis was reported. 



Huhhard Fertilizer Co. The company state: 



"The inactive nitrogen we would suppose comes from the 

 garbage tankage that we use, and in no instance do we use over 

 200 lbs. (to the ton), and the same with each brand of goods, 

 which is simply to make our package run of uniform size. 



"This grade of tankage runs about 2.75% nitrogen and is 

 not as soluble as the other grade that we use." 



It may be said that a fair proportion of the total nitrogen was 

 found present in form of nitrates and ammoniates, and the pres- 

 ence of an appreciable amount of water soluble organic nitrogen 

 would indicate that at least a portion of the organic nitrogen 

 was derived from the better grades of tankage. As a whole, how- 

 ever, the quality of the organic nitrogen was not all that could 

 be desired. 



Mapes Formula and Peruvian Guano Co. The significance of 

 the low activity of the organic nitrogen in the six brands belong- 

 ing to this company, when taken in connection with other data 

 furnished in the analysis, would indicate the use of a small amount 

 of garbage tankage, tartar pomace or some similar material as 

 a conditioner. This was borne out by a statement received from 

 the company last season, their claim being that almost all of their 

 nitrogen was supplied from nitrates, ammonia salts, degelatinized 

 bone meal and Pemvian guano, and that the small amount of 

 inferior material found was used to keep the fertilizer in good 

 mechanical condition. The brands carry a high percentage of 

 mineral nitrogen and there seems no reason to doubt the claims 

 of the company. 



Natural Guano Co. What has already been said about the 

 character of the nitrogen in ground sheep manure applies to the 

 brand put out by this company. The same may be said of the 

 two products put out by the Pulverized Manure Company. 



R. T. Prentiss. The composition of these brands would in- 

 dicate that a portion of the organic nitrogen was derived from 

 garbage tankage or some similar product. There is a fair pro- 

 portion of mineral nitrogen present and a considerable amount 

 of water soluble organic nitrogen, the latter indicating that some 

 of the organic nitrogen was derived from animal tankage. 



In two of the brands the total nitrogen guarantee was main- 

 tained; the other brand showed a total nitrogen shortage of .33%. 

 One must conclude that the quality of the organic nitrogen as a 

 whole was not satisfactory. Mr. Prentiss states that the fer- 

 tilizers were made for him by the D. B. Martin Rendering Co., 

 Philadelphia, Pa., and that the understanding was that nothing 



