THE NATURALISTS’ BUREAU. 
14. COOKE.—Chemical Problems and Reactions. By 
Josiah P. Cooke, Jr. Philadelphia, 1866. 1 
vol., 12mo, cloth.1 
15. “ First Principles of Chemical Philosophy. 
By Prof. J. P. Cooke, Jr. 3rd edition. 12mo, 
cloth. Cambridge, 1873 .3 
16. “ The New Chemistry. By Josiah P. Cooke, Jr. 
(International Scientific Series.) 12mo, cloth. 
New York, 1874 .2 
17. DOUGLAS & PRESCOTT.— Qualitative Chemical 
Analysis." A Guide in the Practical Study of Chemistry 
and in the Work of Analysis. By Prof. S. H. Douglas and 
Prof. A. B. Prescott, in the University of Michigan. 2nd 
edition, revised. 8vo, cloth. New York, 1876 . . # . 3 
18. ELDERHORST.—Blowpipe Analysis and Determi¬ 
native Mineralogy. By W. Elderhorst. Edited by H. B. 
Nason, Ph. D., and C. F. Chandler, Ph. D. Fifth edition, 
revised. Pniladelphia, 1874 .2 
19. FARADAY.—Experimental Researches in Chemis¬ 
try and Physics. By Michael Faraday, 
F. R. S. London, 1867. 8vo, cloth . . 7 
20. “ A Course of Six Lectures on the Va¬ 
rious Forces of Matter. Ill. 12mo. By 
Michael Faraday, F. R. S . . . 2 
21. “ The Chemistry of a Candle. Illustrated. 
12mo. By Michael Faraday, F. R. S . 2 
22. FRANKLAND.-Lecture Notes for Chemical Stu¬ 
dents. By E. Frankland. Inorganic 
Chemistry. 2 vols. London, 1870-72 4 
23. “ How to Teach Chemistry. Hints 
to Science Teachers and Students; being the Substance of 
six Lectures delivered at the Royal College of Chemistry. 
By E. Frankland. 12mo, cloth. London, 1875'. . . 1 
24. GUILLEMIN.— Forces of Nature. A Popular Intro¬ 
duction to the Study of Physical Phenomena. By Amedee 
Guillemin. Translated from the French by Mrs. Norman 
Lockyer, and edited, with additions and notes, by J. Nor¬ 
man Lockyer, F. R. S. Royal 8vo, cloth. Illustrated by 
11 colored plates and 455 wood-cuts. London, 1872 . . 8 
25* HARRIS. — A Treatise on Optics ; containing Elements 
of the Science; in two parts. By Joseph 
Harris, Esq. 1 vol., quarto. Illustrated. 
London, 1775. (Scarce.) .... 7 
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