566 
APPENDIX. 
There were then communicated to the Society the Results 
of a Series of Thermometrical Observations, made hourly 
at Leith, during twenty-four successive hours, once every 
month, from July 1822 to July 1823, by Mr Coldstream. 
Professor Jameson communicated Dr Boue's answer to M. 
Beudant's opinion regarding the Crystalline Rocks of the 
Red-sandstone formation, as explained in the 8d volume 
of his Voyages en Hongrie ; also the first part of Dr Francis 
Hamilton''s Commentary on the Herbarium Amboinense. 
Nov. 15. The Secretary read a paper by the Reverend Mr Dun- 
bar of Applegarth, confirming Shirach and Huber''s doc- 
trine of the occasional conversion of the larvae of working 
bees into queen bees: also, a Notice from Dr Cumin of 
Glasgow, regarding the Formation of Young Tubers within 
the substance of a large Potato, with the original specimen, 
and a Drawing of it by Mr P. Syme. Dr Knox then gave 
an account of the Foramen centrale of Soemmering, as dis- 
covered by him in the Eyes of certain Reptiles, illustrating 
his communication by anatomical preparations. The Se- 
cretary read Extracts from a Paper by Mr Marshall, on 
the Natural and Economical History of the Cocoa Nut-tree. 
Mr Parry exhibited to the meeting Colonel Miller's newly 
invented Percussion- Shell, and gave an account of some 
successful experiments made with it near Leith Fort. Mr 
Nicol repeated, in presence of the meeting, Dobereiner's 
remarkable experiment, shewing the ignition of the fine 
powder of platina, when exposed to a stream of hydrogen 
gas in atmospheric air. 
1823. Dr Knox read a Paper on the Organs of Digestion, Res- 
fpv. 2Q. piration, and Circulation, of the Ornithorynchus paradoxus, 
illustrating his description by stuffed specimens and a natu- 
