.08 Mb. Crum on the Manner in which Cotton unites with Colouring Matter. 



In 600 grs, 1000 grs. 



Brought forward, 42060 841*20 



Organic matter, containing about 8 grains Car- \ 



bon, and 2 of Azote, and C 39-00 78-00 



Water from undecomposed soil 3 



Peroxide of Iron CPf^°^;"l«°V'"°°' • 210^ 



and )P^osph.of ron. . 380 f g^.jg g^.gg 



Clilorides of Potassium and Sodium of decom-^ ^ ^„ , ^^ 



posed soil, ; ^'^^ 1'^^ 



Magnesia, 2-10 4-20 



Loss, 12-61 2522 



500-00 1000-00 



Experiments on Turnips. 



No. of 

 Lots. 



Manures Applied. 



21 cwt. Mixtof Ashes and Night Soil, 

 24 lbs. Foreign Guano, . . 

 20 lbs. Sulphate of Ammonia, 

 \\ bushels of Bone Dust, . , 



11 bushels Soot 



98 lbs. British Guano, . . 



49 lbs. Rape Cake in powder, 



16 lbs. Nitrate of Soda, . . 



f 16 cwt. Ashes & Night Soil, 2s. 8d.>^ 



( 5 lbs. Sulphate Ammonia, lOd. j 



Size of 

 Lots. 



10 falls, 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



Do. 



Value of 

 Manure. 



3s. 6d. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



Do. 



Pboduce. 



cwt. qr. 



10 2 



8 



8 



8 



4 



7 



9 



3 



lb. 

 14 





 21 





 21 





 14 

 14 



16 2 7 



Dr. Anderson, jun., gave an account of the recent researches on 

 Secretion by Messrs. Goodsir and Bowman. 



\st February, 1843. — The President in the Chair. 



Messrs. William Craig, Peter M'Onie, A. D. Anderson, Wm. Gale, 

 William Strang, and George Gardner, F.L.S., were admitted as mem- 

 bers. The following papers were read : — 



XXVIII. — On the Manner in which Cotton unites with Colouring Matter. 

 By Walter Crum, Esq. 



The effect of porous bodies in producing combination and decom- 

 position, independently of chemical affinity, has of late years occupied 

 considerable attention. 



