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Art. XXV . — Proceedings of the Wernerian Natural History 
Society. (Continued from VoL X. p. 357). 
r fP 
March 20. 1824.—* JL PIE Secretary read a paper. By Mr 
John Murray, Lecturer on Chemistry, “ On the Ascent of some 
species of Spiders into the Airf shewing that this depends on 
their fine gossamer threads being peculiarly affected by the elec- 
tric fluid of the atmosphere. Also two papers by the Reverend 
Dr Fleming of Flisk ; the one containing an account of a new 
British species of Echinus ; and the other a description of a 
new species of Plumularia. At the same meeting was read a 
communication from Prideaux John Selby, Esq. of Twizell 
House, containing some curious particulars in the natural his- 
tory of the Golden-crested Regulus. 
April 3. — Mr F. A. Parry read a memoir “ On the Manage- 
ment of Young Plantations of Forest-trees? 
At the same meeting, Dr Robert Knox communicated some 
remarks on the supposed discoveries of Professor Tiedemann 
and Dr Eohmann, relative to the non-existence, in the Phoca vi- 
tulina, or common seal, of the vasa efferentia . 
April 1 7. — Dr Knox read a short paper 44 On the black colour 
of the periosteum in the Colymbus septentrionaTis or Red-throated 
Diver? 
Mr John Deuchar, Lecturer on Chemistry, communicated 
some remarks on Meteoric Stones, and proposed a theory to ac- 
count for their formation. 
At the same meeting, there was laid before the Society the 
first part of a very copious descriptive account of the Sand-field 
in the vicinity of Edinburgh, by Mr Blackadder ; with illustra- 
tive sketches. 
Art. XXVL— SCIENTIFIC INTELLIGENCE. 
ASTRONOMY. 
L Planets Venus and Mars. — The celebrated astrono- 
mer Schraeter maintains, that the mountains in Venus, are in- 
finitely higher than those in the Earth. According to his ob- 
servations, some of them must be seven times higher than Chim- 
borazo, This statement is denied and disproved by Gruithuisen, 
