Crown 8vo., Price is. 
LIFE AND MIND: 
ON THE BASIS OF MODERN MEDICINE. 
BY ROBERT LEWINS, M.D. 
“ Dr. Levvins’ tractate is an attempt to formulate a consistent and rational 
theory of existence from a materialistic point of view. He puts his case with 
clearness and ability.” — Westminster Review, O&ober, 1873. 
WATTS & CO., 84, Fleet Street, London. 
Crown 8vo., 5s. 
SONGS AND SONNETS OF SPRING TIME. 
By Constance C. W. Naden. 
“ Throughout these Poems we find full evidence that the writer is familiar 
with the highest conceptions of modern philosophy.” — Journal of Science, 
Oftober, 1881. 
London : KEGAN PAUL, TRENCH, and CO. 
THE FUEL OF THE SUN. 
Bv W. MATTIEU WILLIAMS, F.R.A.S., F.C.S. 
8 vo., Cloth , Price 7 s. 6 d. 
The Author endeavours to demonstrate that the atmosphere of our earth is 
but a portion of the universal medium of space which the earth has accumu- 
lated by its gravitation. The atmosphere of the Sun is calculated on this 
basis, and it is shown that the original evolution of solar light and heat is a 
necessary consequence of the atmospheric accumulation due to his gravitation. 
A continual supply of fresh solar fuel is further shown to result from the 
combined a&ion of planetary disturbance and the Sun’s motion of translation ; 
and thus both the origin and the maintenance of solar and stellar heat anil 
light are explained. 
All the details of photospheric phenomena, — the spots, the faculre, the 
mottling “granulations,” &c., &c., follow as incidental consequences; as also 
the prominences, the corona, the zodiacal light, and the zones of meteors and 
aerolites. 
The atmospheres of the planets are calculated on the same basis ; and this 
reveals a consistent explanation of the observed meteorology of the inferior 
planets, the surface phenomena and specific gravity of the superior planets, and 
the rings of Saturn. 
The phenomena of the nebulas are shown to be necessary results of the 
atmospheric accumulations of certain modifications of star clusters, or great 
solar systems ; and an explanation of the connexion between solar phenomena 
and terrestrial magnetism is suggested. 
The whole argument is based upon known and well-established facts, and 
unaided by any hypothetical assumptions of imaginary materials or forces. 
London : SIMPKIN, MARSHALL, & CO. 
To Authors, Editors, Lecturers, Publishers, &c. 
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Critiques supplied. 
Foreign Scientific Works, Memoirs, Patent-Specifications, &c., 
translated. 
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nology. 
Distinguished References. 
Address, “ Confidence,” Offices of the Journal of Science, 3, Horse-Shoe 
Court, Ludgate Hill, E.C. 
IS* All communications respecting the Advertisement Department to be addressed 
to Mr. THOMAS BLYTON, at the Office, 3, Horse Slice Court, Ludgate 
Hill , London , E.C. 
