304 EXPERIMENT STATION. [Jan. 



Table Y. — Compilation of Analyses of Aghi- 

 cuLTURAL Chemicals, Refuse Salts, Phos- 

 phates, Guanos, Ashes, Lime Compounds, 

 Marls, By-products, Refuse Substances and 

 Animal Excrements. 



H. D. HASKINS AND L. S. WALKER. 



A. Chemicals and Refuse Salts. 



(a) Nitrogen chemicals. 



(b) Potash chemicals. 



(c) Refuse salts. 



P). Phosphates and Guanos. 



(a) Natural phosphates. 



(b) Dissolved phosphates. 

 ((') Guanos. 



C. Ashes^ Lime Compounds and Marls. 



(«) Ashes. 



(6) Lime compounds. 



{c) Marls. 



D. By-products and Refuse Substances. 



(a) Abattoir products. 

 (t») Fish products. 



(c) Seaweeds. 



(d) Vegetable products. 



(e) Wool products. 



(/) Miscellaneous substances unclassified. 



E. Animal Excrements. 



F. Insecticides. 



As a rule, the analyses reported in the following compilation 

 were made at this laboratory.' Some of them were made many 

 years ago. Eefuse products from various manufacturing in- 

 dustries are likely to vary more or less in composition, due to 

 frequent changes in the parent industry. The revision of the 



1 In the compilation of analyses of seaweeds, five of said analyses were taken from Bulletin 

 No. 21 of the Rhode Island Agricultural Experiment Station. 



