466- Answers to Correspondents. 
which, notwithstanding his fears, he gradually recovered, 
and there seemed every probability of his enjoying a long 
career of health and prosperity, but on Tuesday, the 19th 
ult., he was suddenly seized with paralysis, and was re- 
moved home half senseless and speechless. He was born 
in 1817. It is stated that his commissions alone amount 
to £20,000. 
ANSWERS TO CORRESPONDENTS. 
HOwWARD.—Sir D. Brewster awards the honour of the discovery of 
the rotary character of storms to the late Captain James Capper, 
of the East India Company’s Service; but, at the same time, to 
Mr. Redfield is due the greater honour of having fully investigated 
the subject, and apparently, established the theory upon an im- 
pregnable basis. 
T. B.—Declined with thanks. 
D. D., Dublin.—The general opinion appears to be against Dr. Buck- 
land’s theery with regard to the perforation being produced by the 
snail. 
C. H. J., Edinburgh—tThe air which surrounds us weighs as much as 
581,000 cubic kilometres of copper ; its oxygen weighs as much as 
134,000 of these same cubes. Supposing the earth peopled with a 
thousand millions of men, and estimating the animal population at 
a quantity equivalent to three thousand millions of men, we should 
find that these quantities united consume in a century only a weight 
of oxygen equal to 15 or 16 cubic kilometres of copper, whilst the 
air contains 134,000 of it. 
BOOKS RECEIVED. 
Dermatology. Hunter. 
Lyra Elegantiarum. Edward Moxon and Co, 
Little Willie, and other Poems. Longmans. 
Individual Liberty. George Vasey. 
Hand-Book to Architecture. 
The Contemporary Review. Strahan. 
The People’s Magazine. 
The A. B. C, of Billiards. Warne. 
The A. B. C. of Swimming. Warne. 
The Artizan. 
Science Gossip. Hardwicke. 
The Victoria Magazine. Emily Faithful. 
The Argosy. Strahan. 
Pharmaceutical Journal. 
Observations on the Treatment of Consumption, &c. MacOubrey. 
*,* After the present number the TECHNOLOGIST will appear under 
a new management and editorship. 
