Analysis of certain Woods of Tasmania. 



91 



of the potash, wliich would othenvise be restored to the soil 

 in the ashes of the timber burnt upon it, may lessen its 

 fertility ; but not to an extent likely to prove injurious to 

 good land. I have directed some experiments to be made 

 on a large scale at the convict stations, and shall notify the 

 results of these to the Society ; and I may at the same time 

 state that I shall be always glad to receive any suggestions, 

 and to carry out any experiments, the object of which may 

 be the development of the resources of the Colony. 



Analysis of Seven Varieties of Wood, hy Dr. Motherwell, 

 zvith his Remarks, dc, 2Q)th June, 1847. 



No. 



DIFFERENT SPECIES OF WOOD. 



Casuarina quadiivalvis, (she-oak) ... 



Acacia affinis, (black wattle) 



-mollissima, (silver wattle) 



Eucalyptus resiiiifera(white gum tree) 

 piperita, (red <^uni tree) 



robusta, (stringy bark tree) 



Banksia integrifolia, (honeysuckle) 





>. 



<« 













>. . 



■a 





O o 







"-^ 





SeiH 





'l< 



o g 



c? 



>A 



!^ 



Oi 





Per 



Per 







Cent. 



Cent. 



o ^ 



100 



25 



3 J 

 ( 





100 



30 



H 



o 



100 



30 



2 



k » 



100 



30 



3 



i M 



100 



25 



2 



1 



4 »> 



100 



20 



H 



i „ 



100 



25 



1 



i >. 



Per 



Cent. 



B-i 



N.B. — The half of the above nitrates] 2 



will be the net potash, viz 1 3 



4 



i ^ cent. 



1 l-16tht?'cent. 



Remarks. 



The nitric acid used for saturation is of the specific 



gravity of 13G0, (equal to 64 per cent, of dry acid, 



according to lire's table) ; consequently, \ of an ounce 



is equal to 3 drachms, which takes up very nearly the same 



