APPENDIX. 



565 



IV. PROPORTION OF NITROGEN AND OF PHOSPHORIC ACID IN NUTRITIVE 

 PLANTS, ACCORDING TO BOUSSINGAULT. 



The proportion of phosphoric acid to nitrogen is here, upon an average, 

 1 : 3'5. The greatest deviations in maxima are I : 4'9, in minima I : 1-9. If we 

 omit the four greatest deviations, the average would be 1 : 3'6, and the greatest 

 deviations are 1 : 2*8 and 1 : 4*5. We ought, however, to take into considera- 

 tion that the determination of the nitrogen, but still more of the phosphoric acid, 

 is attended with the greatest difficulty, and therefore may be still open to con- 

 siderable corrections. 



V. EXPERIMENTS OF KUHLMANN ON THE EFFECT OF AMMONIAICAL MA- 

 NURES UPON THE PRODUCE OF MEADOWS. (Comptes rendus, Nov. 13, 

 1843.) 



The experiments were instituted in the rather rainy year of 1843 ; the salts of 

 the manure were applied on the 28th of March, and the harvest took place on 

 the 30th of June. The following Table gives the results : 



OBSERVATIONS ON THE ARTICLES OF MANURE. 



No. 6. This water was neutralised by the hydrochloric acid water of the 

 glue manufactories, and thus a precipitate of phosphate of lime was applied to 

 the meadow. 



o o 3 



