578 
APPENDIX, 
The Secretary read Dr TrailPs Remarks on the Anato- 
my of the Trumpeter Bird, Psophia crepitans. Dr Grant 
then made some Observations on the Habits of the Trito- 
nia arborescens, particularly the power possessed by that 
animal of producmg a peculiar and very audible sound ; 
and at the same time exhibited hving Specimens. Prof. 
Jameson communicated some Remarks on the existence of 
many Mineral Substances, in very minute quantities, in the 
Ocean and in the Atmosphere. He then laid before the 
meeting a Letter from Count Sternberg, accompanied with 
a New Fasciculus of his Work on Fossil Remains of Plants. 
And the Secretary read a Letter from Dr J. Miller of 
Kingston, Jamaica, expressing the wish of the Agricultural 
Society of Jamaica to correspond with the Wernerian So- 
ciety ; to which the Secretary was authorised to reply, assur- 
ing the Jamaica Society that it will afford this Society much 
satisfaction to be able, in any way, to promote the objects of 
the Jamaica Institution. 
Dec. 17. The Secretary read a Paper by Mr John Murray, Lec- 
turer on Chemistry, containing Experiments and Observa- 
tions on the varying Temperature of the Chameleon, as 
connected with the Changes of Colour exhibited by the 
animal. Professor Jameson communicated a Notice of Zir- 
con found in Primitive Rocks in the Island of Scalpay, 
Harris ; by Mr William Nicol, Lecturer on Natural Philo- 
sophy. The Secretary then read a Notice by Mr P. J. 
Selby, regarding a specimen of the rare Larus minutus, 
shot in Galloway, and sent to the Museum by Lieutenant 
MaccuUoch, Barholm House. Likewise a communication 
from Dr Traill regarding the use of Oil of Turpentine for 
preserving Zoological Specimens in Cabinets : This sub- 
stance, it was stated by Professor Jameson, had been em- 
