412 REVIEWS AND BOOK NOTICES. 
United States Coast Survey under Professor Pierce, commenced 
a series of deep dredgings across the gulf stream off the coast of 
Florida, which were continued in the following year, and were 
productive of most valuable results.” 
On turning, however, to the sixth “Bulletin of the Museum of 
Comparative Zoology,” published at Cambridge, Mass., Dec. 26, 
1867, we learn that from dredgings off the coast of Florida be- 
tween May 17th and 29th, and carried to the depth of three 
hundred and fifty fathoms, Pourtalés concludes that “short as the 
Fig. 111. 
Archaster vexillifer. 
season’s work was, and few as were the casts of the dredge, the 
highly interesting fact was disclosed, that animal life exists at 
great depths, in as great a diversity andas great an abundance 4s 
tn shallow water” (the italics are his). 
The work in the spring of 1868 was carried on at a maximum 
depth of five hundred and seventeen fathoms: thus two seasons’ 
work was accomplished by the United States Coast Survey before 
the British Steamer “Lightning” weighed anchor at Oban the 8th 
of August, 1868, for the first British deep-sea dredging voyage- 
