CONTENTS. 



Art. I. Geographical Distribution of Animals. By Professor 

 Louis Agassiz : — 



Different Views on the Subject. — Results of Geological 

 Observations. — Facts and Suppositions. — Natural 

 Limits for Animals. — Limitations and Adaptations. 

 — Influence of Heights and Depths. — Distribution 

 of Mammalia. — Creations on each Continent. — Zoolo- 

 gical Provinces. — General Conclusion, . 1—25 



Additional Illustrations of the Geographical Distri- 

 bution of Animals : — 



1. Geographical Distribution of Sturgeons, . 25 



2. Fishes of Lake Superior compared with those of the 



other great Canadian Lakes, ... 27 



3. General Observations ; all Fresh- water Fishes of 



North America different from those of Europe — 

 Lake Superior and the Lakes north of it constitute 

 a distinct Zoological District — These Fishes have 

 been created where they now live — Deductions 

 from this fact, . . . . . 30 



II. On the Geography and Geology of the Peninsula of 

 Mount Sinai, and the adjacent Countries. By 

 John Hogg, M.A., F.R.S., F.L.S. ; Honorary 

 Secretary of the Royal Geographical Society, &c. 

 (With a coloured Geological Map.) Communicated 

 by the Author. (Continued from Vol. xlviii., 

 p. 219), ...... 33 



III. Synopsis of Meteorological Observations made at the 

 Observatory, Whitehaven, Cumberland, in the year 



