279 
1911-12.] Report on Rock Specimens. 
were hurtled against each other till they were more or less rounded. They 
were then carried forward by winds and currents, and eventually scattered 
and floated on till waterlogged. The material under consideration was 
probably borne to this Station by the southern descending branch of the 
Gulf Stream. 
The manner in which the crystals stand out from the cellular matrix 
further suggests the idea that, under such a pumice floe as that sent off* by 
Krakatoa, deposits like the so-called “ crystal tuffs ” may have been 
produced. 
The organism such as Stephanoscyphus attached to the specimens from 
this locality show that some of the stones must have been embedded “end on.” 
Three small pieces of furnace clinker and cinder, the largest only J-inch 
in diameter, were found among the material. The much corroded auditory 
bulla of a large finner whale was also obtained from this locality (PI. VII. 
fig. 2). 
Station 88. 18th July 1910. 
Lat. 45° 26' N., long. 25° 45' W. ; depth 3120 m. (1703 fms.). 
Globigerina Ooze. 
No rock fragments, but only some pieces of coal evidently dropped from 
ships, were found among the material submitted to me from this Station, 
but a fragment of limestone (5x3 inches in diameter) is recorded from the 
material examined in the “ Challenger ” office, and the sounding-tube brought 
up a roll of ooze 14 inches in length. The residue of the ooze, insoluble in 
hydrochloric acid, is 26‘34 per cent., consisting of 20 per cent. “ minerals 
(0T5 mm. in mean diameter) angular and rounded; quartz, orthoclase, 
mica.” This large amount of continentally-derived material evidently 
shows that the Station is or has been within the sphere of floating ice. 
In the material examined by me the only specimens that appear to have 
been brought by natural agency are four pieces of teredo-bored wood, the 
largest 2 J inches long and quite thin. The wood is endogenous, and has the 
appearance of that of a palm. It has evidently floated about till it has been 
thoroughly riddled by some boring animal, probably a species of Teredo. 
It may have been derived from some tropical or subtropical source, and has 
probably been brought by the Gulf Stream from the West Indies or South 
America. 
The other material from this locality consists of three pieces of furnace 
clinker (from 2 to 4 inches in diameter), a fragment of anthracite and one 
of bituminous coal, all evidently dropped from ships. One knotted piece of 
wood-charcoal (ljxljxl inch) shows twelve distinct lines of growth, 
