DEPARTMENT OF PLANT AND ANIMAL CHEMISTRY. 



J. B. LiNDSEY, Chemist. 



INSPECTION OF COMMERCIAL FERTILIZERS 



FOR THE SEASON OF 1909. 



By H. D. Haskins, Chemist in Charge. 



ASSISTED BY 



L. S. Walker and P. V. Goldsmith. =•' 

 (Approved and Authorized 

 Wm. p. Brooks, Director.) 



In place of the full text of the Massachusetts fertilizer law, 

 a few deductions therefrom are referred to at this time. 



1. An application for a certificate of compliance with the 

 regulations of the trade in commercial fertilizers and materials 

 used for manurial purposes in this state must be accompanied: 



First, with a distinct statement of the name of each 

 brand- offered for sale, the name of the manufacturer 

 and place of factory. 



Second, with a statement of the percentages of phosphoric 

 acid, soluble in distilled water, reverted as well as total, 

 of nitrogen and of water soluble potassium oxide guar- 

 anteed in each distinct brand. 



Third, with the fee charged by the state for a certificate, 

 which is five dollars for each of the following ingred- 

 ients: nitrogen, phosphoric acid and potassium oxide 

 guaranteed in each and ever}^ distinct brand. 



2. The obligation to secure a certificate applies not only 

 to compound fertilizers but to all substances, single or compound, 

 used for manurial purposes offered for sale in this state. In- 

 ferior substances like leather, hair, and wool waste, shall not 

 be used unless so stated in the guarantee. 



3. The certificate of compliance with the laws of the state 

 must be secured annually before the first of May. 



4. Manufacturers, importers and dealers in commercial fer- 

 tilizers can appoint as many agents as they desire after having 

 secured at this office the certificate of compliance with the laws 

 of the state. 



♦Resigned November 1.5, 1909. 



Note — The writer's thank.s are due to Dr. J. B. Lindsey for suggestions and criticisms 

 in the subject matter of this bulletin. 



