The Publisher will mail this Journal to any Address in the United States, for one year, on receipt of 
Post Office Order for 11s. 
No. 16. Series. Oct. 1880 . [2s. 6d. 
THE POPULAR 
rime* 'llcrictt 
EDITED BY W. S. DALLAS, F.L.S. 
Assistant-Secretary of the Geological Society. 
CONTENTS. 
Infusoria as Parasites. 
By W. Saville Kent, F.L.S., F.R.M.S., &c. (Illustrated.) 
On the Opinions of Voltaire and Laplace regarding Geology. 
By Prof. P. Martin Duncan, F.R.S. &c. 
The August Meteors. (Illustrated.) 
By W. F. Denning, F.R.A.S. 
A Large Crater. 
By Prof. John Milne, F.G.S., Japan. 
REVIEWS. 
Freshwater Rhizopods — Meteorology — Heat — Flowers — Pure and applied 
Mathematics — The Industries of India — Rambles in search of Minerals — 
Guthrie’s Electricity — The Supernatural in Nature — Land and Freshwater 
Shells. 
SCIENTIFIC SUMMARY. 
Anthropology — Astronomy — Botany — Geology — Mineralogy — Physics — - 
Zoology. 
ILLUSTRATED. 
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DAYID BOGUE, 
8 ST. MABTIN’S PLACE, TEAFALGAE SQUABE. 
LONDON : PRINTED BY STRANGEWAYS AND SONS, TOWER STREET, UPPER ST. MARTIN’S LANE. 
ie First Series, edited by Dr. H. Lawson, may be bad complete in numbers, price 
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