[The Copyright of Articles in this Fournal is Reserved.) 
CONTENTS OF No. XEVET 
ART. PAGE 
I. VARIATION IN THE OBLIQUITY OF THE Ec ipTic. By 
Colonel A. W. Drayson, R.A., F.R.A.S. . : : Be (0 
II. THe RIGHTS OF THE THINKER . : . : d «: 207 
III. ANoTHER VIEW oF LEVITATION . : : : : 21302 
IV. Tue History oF Our EartTu . ; : : : 2 809 
V. Drrricutties or ‘ DARWINISM ”’. : ; ‘ : ay tae 
VI. Tue Mecuanicar Action oF Licut. By William Crookes, 
BOI. 9<5 CCE. : : : : ; : F : es ey) 
NOTICES OF SCIENTIFIC WORKS. 
Fraser and Dewar’s “ The Origin of Creation.” . - : Ra 
Cameron’s ‘‘A Manual of Hygiene.” . 356 
Crowell’s ‘“‘ The Identity of Primitive Christianity aa Modern 
Spiritualism.” . : : : ; : : 7, 
Plympton’s ‘“‘ The Blowpipe.” - : : : : 2) 350 
Greenwood’s “*A Manual of Metallurgy.” . : : ; «1/359 
Goldsworthy’s ‘‘ The Best Mining Machinery.” . 360 
Girdlestone’s ‘“ Number, a Link between Divine iatelieenne aes 
Elumanis 361 
Marcet’s *‘ An Bxperimental Inquiry me the Nucnien ie Anat 
ISSUES... 1 ; - : : ; : - 363 
Meunier’s “ La Terre Wewerale.” Setter = 364 
“ Report of the Commissioners of femealture for the veut 1872.” 366 
** Report of the Sanitary Committee of the Board of Health on 
the Concentration and Regulation of the Business of 
Slaughtering Animals in the City of New York.” . Avec a7. 
