Classification of Fertilizers Published. 



The fertilizers are classified or grouped in the subsequent tables- 

 as follows : 



Complete Fertilizers, 



Dissolved Phosphates and Potash, 



Wood Ashes, 



Ground Bones, Dissolved Bones, Tankage and 



Dry Ground Fish, 

 Nitrate of Soda, Dried Blood, Cottonseed Meal, 



Linseed Meal and Castor Pomace, 

 Potash Salts, 

 Phosphoric Acid Compounds. 



Complete Fertilizers. Under this head are grouped those fertilizers- 

 which furnish the three essential elements of plant food : nitrogen, 

 phosphoric acid and potash. They include the special crop 

 manures, so called, the nitrogenous superphosphates and other mis- 

 cellaneous fertilizers. The fertilizers in all of the several groups 

 are arranged according to the alphabetical order of manufacturers. 

 The various brands of the American Agricultural Chemical Com- 

 pany will be identified by the prefixion of the name of the brai^ch 

 firm responsible for the trade name. 



Dissoh^ed Phosphates and Potash. These samples will be found 

 following the list of complete fertilizers. The names of these brands 

 might indicate them to be complete fertilizers but a glance at the 

 analysis shows the absence of nitrogen. They are composed mainly 

 of acid phosphate (superphosphate) or possibly dissolved bone black 

 with a little potash, the remaining bulk being made up, when neces- 

 sary, by some filler. 



Wood Ashes. Only two brands of wood ashes were officially col- 

 lected ; the analyses of these will be found in the same table 

 with the "dissolved phosphates and potash "as they furnish mainly 

 potash and phosphoric acid. Many other so-called farmers' samples 

 have been analyzed at this laboratory during the season ; the results, 

 of these analyses have been reserved for a future publication. 



