10 



Experiments upon Swedes. 



I have carefully analysed the bone-ash dissolved in sulphuric 

 acid, and obtained the following analytical results : 



Water 32'80 



Organic matter "13 



Biphosphate of lime 18'49. 



Equal to bone-earth, rendered soluble by acid 

 Insoluble phosphates 

 Hydrated sulphate of lime 



Alkaline salts 



Sand 



(28-80) 



6-43 



38-39 



1-94 



1-82 



100-00 



The swedes were taken up in the last week of November, 

 topped and tailed, and the whole produce of each plot weighed. 



Table, showing the Produce of trimmed Swedes of Experimented Plots, cal- 

 culated per Acre, as well as the Increase over the unmanured part of 

 Field. 



In constructing this Table, the natural produce of the experi- 

 mental field was taken at 2 tons 15 cwt. 75 Ibs., being the 

 average of the two unmanured plots Nos. VIII. and XII. 



