Identifier: americanauniver04beac (find matches)
Title: The Americana : a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc. of the world
Year: 1903 (1900s)
Authors: Beach, Frederick Converse, 1848-1918 Rines, George Edwin, 1860-
Subjects: Encyclopedias and dictionaries
Publisher: New York : Scientific American Compiling Dept.
Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: University of Toronto

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surface to breathe it expels the air violently,and the vapor it contains becomes condensedinto a cloud; if the expiration commences be-fore the mouth of the spiracle or blow-hole isabove the surface, a little water may be blownup like spray but no water from the mouth isthus discharged, for the soft palate firmly em-braces during life the upper end of the larynx,so that the gullet is divided into two narrowpassages, while the lungs have a continuouspassage to the exterior. The blood vessels,especially those of the thorax and spinal canal,break up into extensive plexuses or networks,in which a large amount of oxygenated bloodis delayed, and thus the animal is enabled toremain tinder water, the necessity for changingthe air in the lungs being diminished. Fossil Cetacea.— Bones of cetaceans, mostlyallied to the living species, are found in themarine sediments of the Tertiary and Quater-nary ages, and arc occasionally dredged up fromdeep-sea deposits. The hard and heavy ear- CETACEA, E
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Fi*. i Skull „< i . all of do. j \t,n,t • : of I) i ; -n;. 7 Dolphin. 8 Skull of 14 Short tailed Vfanl 1 ifi Skull of do. :ata, &c

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