iv CONTENTS. 
Page 
XXXIII. Researches on the influence which Light and the 
Green-coloured Organic Substance often found in 
Stagnant Water exercise on the Quality of the 
Gases contained in the latter. By Mr A. Morren, 180 
XXXIV. Proceedings of the Wernerian Natura] History So- 
ciety, . : : : : +, Lao 
XXXV. Proceedings of the Geological Society, . . 185 
XXXVI. Proceedings of the Royal Scottish Society of Arts, 189 
XXXVII. Notice of the Meeting of the Italian Scientific As- 
sociation held at Florence in September 1841, 189 
XXXVIII. Scientiric INTELLIGENCE— 
METEOROLOGY. 
Register of the Weather and Climate of Orkney. eGR 
Electrical Light on Bayonets, &., . ° . - 196 
ZOOLOGY. 
On the Corpuscles of the Blood. By Dr Marrin Barry, 196 
GEOLOGY. ° 
Remarks on the Freezing of Water. By Professor Krizs, 198 
ARTS. 
New Musical Instrument, 5 ‘a ; - 199 
XXXIX. List of Patents granted for Scotland from 22d 
September to 22d December 1841, ° - 201 
MEMORANDUM. 
Notices of New Works in our next Number. Along with the Plates 
for this Number are two Plates belonging to the preceding Number, one 
illustrative of Professor Escuricur on Intestinal Worms, and another of 
Mr Sane on Orthographic Projection. 
