1841.] 



Report on the Island of Chedooba, 



437 



s 



Appearances. 

 American Soil. Chedooba Soil. 



1. "When sifted, like fine dark- f 

 grey sand and charcoal dust, arti- £ The same 

 ficially mixed. 



2. The sifting coarse sand, frag- 

 ments of sandstone and shells with 

 pieces of dried and charcoal wood, 

 or charcoal in all states from char- 

 coal to soft lignite. 



The same, but no shells, and the 

 sandstone in very minute frag- 

 ments—perhaps owing to the spe- 

 cimen being in very small quan- 

 tity. 



With cold water. 



3. When agitated settles in a) 



coarse greenish-grey sand, with a^The same, 

 layer of black matter above it. -* 



4. When left for a day or two-v 



water is tinged of a pale yellowish CThe same, 

 colour. J 



Heated in the Matrass. 



5. Smokes and gives out a 

 strong peaty odour. Silver leaf 

 and litmus paper are discoloured 

 and a brown smoky-tasted oil is 

 deposited in the tube. 



Analysis gave 



The same. The silver leaf I think 

 more discoloured ; the litmus pa- 

 per not so immediately. In all 

 other respects the same. 



Saline matter, Mur. of 

 lime and soda, but no po- 

 tass 



Vegetable matter : most- 

 ly lignite or peaty powder 

 with a little water J 



Iron, protoxide 1.00 



0.20 



3.20 



Carbt. of lime 2.76 



Alumina 0.20 



Silex 92.00 



99.15 

 Water and loss. . .15 



100.00 



Saline matter Mur. of-* 

 lime and sulphur of soda, C 

 but no potass J 



The same 2.00 



1.75 



Protox. (and peroxide in ) 



small quantity ?) * 



Carbt. lime 3.00 



Alumina 0.40 



Silex 91.65 



Water and loss, 



99.05 

 .95 



100.00 



