TWENTY-FIRST YEAR OF PUBLICATION. 
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AND ANNALS OF 
ASTRONOMY, BIOLOGY, GEOLOGY, INDUSTRIAL ARTS, 
MANUFACTURES, AND TECHNOLOGY. 
(MONTHLY, FOR V1ERLY “THc QUARTERLY JOURNAL OF SOIENGE.”) 
Vol. 
v A * (Series/ 
N 
H 
\o\ 
No. 
CXXIX. 
\ 
SEPTE.MIBEB 
1884 . 
: 
Articles. 
1. “ Ultimate Religious Ideas.” 
By S. Billing 505 
2. The Extra&ion of Sugar from 
the Juice of the Cane and 
the Juice of the Beet-root, 
viewed in its Commercial 
Aspedt. By R. Galloway, 
M.R.I.A 517 
Insedt Preferences. By J. W. 
Slater 527 
The Adaptive Range of the 
Batrachians, and the Corre- 
lation of Organs. By Dr. J. 
Kollmann 530 
On Tropical Epiphytes .. .. 533 
CONTENTS 
PAGE 
3 - 
4 - 
PAGE 
Articles — continued. 
6 . On the Constitution of Gaseous 
Heavenly Bodies 537 
7. The Geological Structure of 
the Sahara 341 
Analyses of Books. 
Terminal Forms of Life . . . . 544. 
Text-Book of Descriptive Mine- 
ralogy 547 
Report of the Commissioner of 
Agriculture for the Year 1883. . 548 
Bulletin of the Philosophical So- 
ciety of Washington .. .. 550 
&c., &c. 
Correspondence 537 
Notes 565 
LONDON : 
HORSE-SHOE COURT, LUDGATE HILL. 
Where Communications for the Editor and Books for Review may be addressed. 
-t 
J 
PRICE ONE SHILLING AND SIXPENCE 
[The Articles and Reports in this Journal are Copyright .] 
