NARRATIVE OE THE CRUISE. 
737 
three sets of sights in the forenoon. The afternoon was cloudy, with little or no wind, 
and no astronomical observations could be obtained until 9.40 p.m., when, a few stars 
shining out for a minute or two, and the horizon being lit up by the moon, both the 
latitude and longitude were obtained, and the ship was found to be in lat. 33° 24' N., 
long. 138° 44' E., or 24 miles northeast of the position by D.R. A moderate westerly 
breeze having sprung up, the ship was steered due north, this northeasterly set being 
expected to continue, but it was found at 8 a.m. on the 11th April that a current of only 
11 miles due east had been experienced since the sights at 9.40 p.m. on the 10th, and 
the ship had consequently barely cleared the Redfield Rocks. The surface temperature 
on the 10th was about 68° from 6 a.m. to 1 p.m. 63° from 1 p.m. to 8 p.m., 68° from 8 
to 9 p.m. , after which it fell gradually. 
On the 11th April, at daylight, the islands of Kosu Sima and To Sima were seen, and 
a course shaped to pass inside Tries Island with a fresh fair wind, the vessel arriving at 
Yokohama at 5 p.m. 
The deposits between the Admiralty Islands and Japan proved very interesting, 
chiefly from the large number of Radiolarians present in them, and also from the 
complete absence of carbonate of lime in all the deeper soundings. In depths greater 
than 2400 fathoms there was either no carbonate of lime in the deposit or only a 
small percentage, as for instance in 2450 fathoms in lat. 2° N., where there was 6 per 
cent., due to the presence of a few broken fragments of pelagic Foraminifera shells. On 
the other hand, there was 78 per cent, of carbonate of lime in the deposit at 1850 
fathoms on the Caroline Islands plateau, which was a Globigerina ooze made up princip- 
ally of the shells of pelagic Foraminifera, Coccoliths, and Rhabdoliths. The absence of 
the shells of Pteropods, Heteropods, and other pelagic Molluscs from this deposit is 
worthy of note, as well as the absence of the Foraminifera shells from all the deeper 
deposits, as these organisms were very numerous at the surface throughout the whole 
region. As already stated, siliceous shells and skeletons were especially abundant 
in all the deposits in this section, more numerous than in any deposits previously met 
with during the cruise. Sometimes these beautiful little organisms made up more than 
one half of the deposit, which was in consequence called a “ Radiolarian ooze.” This was 
the ease in the deepest sounding, viz., 4475 fathoms, the greatest depth from which a 
specimen of the bottom has yet been obtained. On this occasion the sounding tube had 
sunk about, 3 or 4 inches into the bottom and brought up a section to that extent. 
The layer, which formed the upper surface at the bottom of the sea, was of a reddish or 
chocolate colour, and contained, besides the Radiolarian and Diatomaeeous remains, 
numerous small round pellets of manganese peroxide, fragments of pumice, and clayey 
matter. The deeper layers were of a pale straw colour, and resembled both in appear- 
ance and touch the Diatom ooze from the Antarctic Ocean. These deeper layers had 
