1899.] PUBLIC DOCUMENT — No. 33. 115 



PART II. — REPORT ON GENERAL WORK IN THE 

 CHEMICAL LABORATORY. 



CHARLES A. GOESSMANN. 



1. Analyses of Materials sent on for Examination. 



2. Notes on Wood Ashes, Condition of Trade, etc. 



3. Notes on Fertilizers for Pot Cultivation and Green- 



houses. 



4. Observations regarding the Action of Acid and Basic 



Phosphates on the Availibility of the Nitrogen in 

 Blood, Steamed Leather and Leather Scraps. 



5. Notes on the Determination of the Available Phos- 



phoric Acid in the Soil. 



6. Analyses of Drainage Waters obtained in Connec- 



tion with Some Field Experiments carried on upon 

 the Grounds of the Station. 



1. Analyses of Materials sent on for Examination. 



The number of substances tested in this connection amount 

 to several hundred. The results of our examination are 

 already published in detail in Bulletins 51, 54 and 57 of 

 the Hatch Experiment Station of the Massachusetts Agri- 

 cultural College, in connection with the results of the official 

 Inspection of commercial fertilizers collected from original 

 packages by an efficient delegate of the station. 



The responsibility of the genuineness of the articles sent 

 on for examination rests in all cases with the parties asking 

 for the analysis. Our publication of the results refers merely 

 to the locality they come from, to avoid misunderstandings. 

 The work carried on in this connection is growing from 

 year to year in importance. 



A large proportion of commercial manurial substances 

 consist of by or waste products of various industries. The 

 composition and general character of these materials depend 



