SOLAR PHYSICS. 
By A. H. SWINTON, 
Member of the Entomological Societies of London, New York, 
and Stettin ; Correspondent U.S. Ent. Commission, dec. 
Price 7s. 6 d., in Ornamental Cover, Illustrated. 
“The table of Sun Cycles is explained and with a which would 
this the reader can post himself up in knowledge, the mer 
have stunned his ancestors.”— Surrey Advertiser. . : ncraa « e and 
“ Allow the Sun spots to have a definitely recurrent period Qccurrence 
J?KE££ crops, inroads of 
time and labour. The influence of the solar spots has been suspedted y 
greatest minds of the age.” — Liverpool Mercury. .1. attention.” 
0 »i The subjedt is one of great interest, and is deservin 0 op 
— G lasgow E veiling T i mes . 
London : W. H. ALLEN & CO. 
Monthly, One Shilling. Post free, 14s. per annum. 
THE 
ILLUSTRATED SCIENCE MONTHLY. 
n /_ ~T~ f /■> /-/ I ni/flllf Id 
: 
A Popular Magazine of Knowledge, Research, Travel, and Invention. 
Edited by J. A. WESTWOOD OLIVER. 
f i nnt articles by the most eminent writers on Economics, Geograph) 
Contains articles Mg Qardenin(T Farming, Forestry, Health, Astronomy, 
deals, in fad, with every branch of 
SC New BL'Sa^iewed, ah'an exhaustive " Chronicle of Science ” places 
“"ThAKraS mo,e rr0 5 use in nil: " b ," 
and beSw m execution than has ever before been attempted ,n a sc, ent, be 
periodical. 
. paUof scientific interest, and especially remarkabie for the clearness ana beauty of its 
''^^ifrefuUyTdited! svdf arran^ Chrou. 
The cL\ h 'ibu“Vs areTf'tbe first rank, and the subjects are treated in a popular manner. 
— Munches er Evening News. «—N.B. Daily Mail. 
Volume I., handsomely bound in cloth, price 6 s. 
London: DAVID BOGUE, 3. St. Martin’s Place, Tr afalgar Square^ 
To Authors. Editors, Lecturers, Publishers, &c. 
and 
A /T ANUSCRIPTS prepared for Press. Compilations, Abstracts, 
M F< SSirSS5g«c Works, Memoirs, Patent-Specifications, &c., 
traQ Special facilities for Biology in all its branches, and for Chemical Tech- 
» ol °»- Distinguished References. 
Address, •• Cot.rtmtt.CE,” Office of the Vcurnul of Scene,. 3, Horse-Shoe 
Court, Ludgate Hi ll, E.C. 
Hill London. E.C. 
