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LINNZ AN SOCIETY, 
On Tuesday the 6th of June a paper by Dr. Benjamin Smith 
Barton was read, giving an account of a singular bird lately ob- 
served in the United States of America, which he considers as a 
new species of tantalus. 
On Tuesday the 20th of June a paper by Mr. J. Murray was 
read, containing experiments on the application of vegetable poi- 
sons to animals, He laid bare the crural nerve and muscle of the 
hind leg of a frog, and applying the poisonous juice to the part, 
tried whether the muscle could be excited by a galvanic battery. 
Opium destroyed the excitability in 5 minutes; but the addition of 
citric acid restored it again. ‘Tincture of digitalis produced no ef- 
fect. A considerable number of similar experiments were related. 
At the same meeting a paper by Mr. Bicheno was read, describ- 
ing three native species of orchis, hitherto very frequently con- 
founded together. 
At the same meeting a Latin paper by Sir Justly Green, Bart, 
was read, describing 40 species of phascum. 
The Society adjourned during the long vacation. 
ARTICLE XV. 
SCIENTIFIC INTELLIGENCE; AND NOTICES OF SUBJECTS 
CONNECTED WITH SCIENCE, 
I, Royal Medical Society, Edinburgh. . 
The Royal Medical Society propose, as the subject of their prize 
essay for the year 1816, the following question :— re 
“ What changes of composition does the process of digestion in 
quadrupeds produce, on earths, oxides, and earthy, alkaline, and 
metallic salts? ” . 
A set of books, or a medal, of five guineas value, will be given 
annually to the author of the best dissertation on an experimental 
subject proposed by the Society; for which all the members, 
honorary, extraordinary, and ordinary, shall alone be invited as 
candidates. 
The dissertations are to be written in English, French, or Latin, 
