CHAP. V.] THE GULF-STREAM. BDO 
a little way out of the town, where there is a very astonishing 
exhibition of the action of ice. There is a round tower at the 
top of “ The Point,” with a guard of soldiers and mounting a 
few cannon, and this tower stands in the middle of an area of 
one or two acres, where the rock, a highly altered Silurian schist, 
is perfectly bare and polished. The undulations and contortions 
in the foliations of the schist are seen in section on the polished 
surface ; and traversing these sinuous markings there is a won- 
derful system of parallel ruling in grooves of greater or less 
depth, crushed into the stone by bowlders and fragments of 
rock borne by the ice-cap in its slow progress over it. On our 
way Dr. Honeyman pointed out to us, and we photographed, a 
very well-marked synclinal axis in the schist, exposed in section 
in the sea-cliff. This axis seemed to be the key to the structure 
of the whole district, for the schists dipped down to it, in differ- 
ent directions on either side, for a long distance. Professor 
Alexander Agassiz paid us a short visit from Boston during 
our stay, and we had great pleasure in introducing him to some 
novelties in his favorite groups, and chatting over our plans 
with him. 
On the morning of the 15th, a large number of the members 
of the Nova Scotia Institute and their friends came on board, 
under the guidance of Dr. Honeyman, and we took them over 
the ship and showed them all our appliances; and at four 
o’clock in the afternoon we cast off from the jetty, and pro- 
ceeded on our return voyage to Bermudas. 
On the following morning we sounded in 83 fathoms on the 
eastern extremity of Le Have bank, with a bottom of stones 
and gravel, and a bottom temperature of 1°-7 C., that of the 
surface being 4°°7 C. Four hauls of the dredge were taken in 
rapid succession, the dredge remaining on the bottom on each 
occasion for about an hour. We thus got an extremely good 
idea of the fauna, which was decidedly subarctic in its character, 
with abundance of the characteristic large amphipod crustaceans 
