TWENTIETH YEAR OF PUBLICATION 
AND ANNALS OF 
ASTRONOMY, BIOLOGY, GEOLOGY, INDUSTRIAL ARTS, 
MANUFACTURES, AND TECHNOLOGY. i 
(MONTHLY, FORMERLY ‘' THE QUARTERLY JOURNAL OF SCIENCE.”) 
Articles. page 
i. Waste 377 
2. Some Ethnological Observa- 
tions. By Cl. de Crespigny 384 
. 3. Observations on Polluted Wa- 
ters. By J. W. Slater .. 386 
4. Polydesmus complanatus. By 
A. H. Swinton 391 
5. Thought Reading. By Rev. 
H. H. Higgins, M.A 396 
6. On Technical Education. By 
Robt. Galloway, M.R.I.A. 403 
Analyses of Books. 
Physiological Cruelty, or Fadt v. 
Fancy : an Enquiry into the 
Vivisection Question .. .. 41 1 
Analyses of Books — continued, page j 
The Natural Genesis 414 
A Manual of Photographic Che- 
mistry, Theoretical and Prac- 
tical 418 
Transit Tables for 1883 . . . . 419 
From the Molecular World .. 420 
Notes on the Detection of the 
Acids usually met with in an 
Analysis .. 41s* » 
Longman's Magazine 423 
Report on Insedts for the Year 
1881 424 
The Mason College Magazine . . 426 j 
See., See. I 
Correspondence. Notes. 
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