- 
38 REVIEWS. 
mountains, is solitude complete and unbroken. Whatever 
be the charm, it is yet certain that having gazed once we 
admire the strange picture ever after. 
REVIEWS. 
REPORT UPON DEEP SEA DREDGINGS IN THE GULF STREAM.*— This 
number of the Bulletin sums up the results of the panes expeditions, 
and is also especially valuable for many novel and interesting observa- 
tions upon geological and zoólogical questions. According to Professor 
Moe the fauna of the reef, consisting mainly of corals, extends to ten > 
fathoms only. 'The second zone, *a muddy mass of dead and broken 
shells, he corals, and coarse coral sand, is chiefly inhabited by 
worms, and such shells as by their sobi seek soil of this m 
with a few small species of living corals, some alc? atest ians, and a 
Alge.” This extends seaward “from a few miles” off Cape rise 
to v geom miles and more off Cape Sable.” ‘A third region, or zone, 4 
beginning at a depth of about fifty or sixty fathoms, and extending to a 4 
? 
abundant, the species are generally of small size and belong to genera 
either identical or closely allied to those of the Cretaceous period. Th 
deep sea proper beyond this zone lies upon **a uniform accumulation of 
thick, adhesive mud, with a variety of worms and such shells as seek 
muddy bottoms." Professor Agassiz thinks that if the bottom in he 
depths was rocky, animal life would be **as varied and as numerous 
paratively as are the Alpine plants on the very limits of perpetual snow." 
With reference to geology, Professor Agassiz says that he infers from 
into deepe oor of this zone is rocky ; it is, in fact, a lime ] 
stone conglomerate, a iss of lumachelle, composed entirely of the re- E 
mains of organized beings, animals now living upon its surface." Algæ ; 
are but sparsely represented upon the plateau, and though the animals are i 
E 
been subject only to comparatively van NNI of level after they 
were once elevated above the primeval o 
In the main bearing of this Poids Piotuo) Agassiz agrees with 
* d of the Museum of Comparative Zoology. No.13. Re eport upon Deep Sea Dredg- 
he Gulf Stream during the Third Cruise of the U. S, Steamer Bibb; addressed to Pro- 
aede » Peirce, Supt. U. S. Coast Survey. Agassiz. pp. 363-386. Cambridge, 1869. 
at 
ie Beet, 
