AMENDED RULES. 245 



One hundred parts of — 



Carbonate of lime contain 56 parts of calcium oxide (lime), and 



44 parts of carbonic acid. 

 Sulphate of magnesia (free of water) contain 33.3 per cent of 

 magnesium oxide (magnesia), and ^6.6 per cent of sulphuric 

 acid. 



C. A. GOESSMANN. 



The Committee upon Subjects for Essays and their Assign- 

 ment reported as follows : — 



COMMITTEE ON ESSAYS. 



Advance of Massachusetts Agriculture in Forty 



Years J. S. Grinnell. 



Agricultural Science of this Country compared 



with that of other Countries . . . Levi Stockbridge. 



What has Chemistry done for Agriculture? . J. R. Nichols. 



Raising and Selecting Field and Garden Seeds, O. B. Hadwen. 



Construction of Silos; Use and Value of En- 

 silage ....... E. Herset. 



The Influence of Agricultural Pursuits upon 



Personal and Domestic Happiness . . A. C. Varnum. 



The Sanitary Essentials of the Home and Farm, J. P. Lynde. 



How to keep Boys on the Farm . . . J. B. Moore. 



The assignments were accepted by the members desig- 

 nated, and adopted by the Board. 



Mr. Hersey, from the Committee upon the Revision of 

 Rules, made a report, which was discussed, amended, and 

 adopted as follows : — 



AMENDED EULES OF THE BOAED OF AGEICULTURE. 



At the business meeting of the Board held in 1867 it was 

 Voted, That the several societies receiving the bounty 

 of the State be required hereafter to offer annually three 

 premiums, of not less than eight, six, and four dollars 

 respectively, for the best reports of committees who recom- 

 mend the award of premiums. 



In 1871 the Board 



Voted, That no society receiving the bounty of the State 

 shall bestow any premiums or gratuities on grade or native 

 buUs. 



