912 
THE VOYAGE OF H.M.S. CHALLENGER. 
were very numerous, much more so than in the sounding tube or dredge. The dredge 
contained a very large quantity of a light brown or red coloured ooze, which when dried 
became white, with a delicate rose tinge. A quantity of this ooze was passed through fine 
sieves, and the remainder was placed in bottles and brought home for further and more 
careful examination than could be made on board ship. There remained from the quantity 
passed through the sieves on board three small pieces of pumice and a few fragments of 
a Gasteropod shell. The pieces of pumice were about 5 mm. in diameter, rounded, white, 
areolar, and containing small crystals of sanidine, hornblende, and magnetite. During 
the cruise it frequently happened that no particles of pumice, of sufficient size to be 
perfectly determinable, were found in the specimen of a Globigerina ooze brought up in 
the sounding tube, yet when a large quantity of the ooze was obtained by the dredge or 
trawl at the same place, and passed through sieves, a few pieces of pumice were obtained, 
as in this instance. It is important to bear this fact in mind when judging of the role 
played by pumice in the formation of deep-sea deposits. 
In the examination of the large quantity of this ooze brought home the following 
organisms were observed : — 
Fragments of Echinoderms, Ostracodes ( Cy there dictyon and Cythere dasyderma), 
a small Lamellibranch, a fragment of a Polyzoon, otoliths and small teeth of fish, fragments 
of Lepas valves, fragments of Pteropods and Heteropods ( Hyalea , Cleodora, Cuvieria, and 
Atlanta), Rhabdoliths and Coccoliths, a few Radiolarians, a few Sponge spicules, one or 
two fragments of Diatoms (?), and the following Foraminifera , 
Biloculina depressa. 
Spiroloculina tenuis. 
Miliolina seminulum. 
Hyperammina vagans. 
Reophax scorpiurus. 
Thurammina papillata. 
Cyclammina cancellata. 
Verneuilina pygmcea. 
Virgulina schreibersiana . 
Lagena globosa. 
Lagena gracilis. 
Lagena Icevigata. 
Lagena Ice vis. 
Lagena \ lagenoides. 
Lagena lagenoides var. 
tenuistriata. 
Lagena lucida. 
Lagena seminiformis. 
Lagena squamosa. 
Lagena striata. 
Nodosaria calomorpha. 
Cristellaria obtusata. 
Cristellaria rotulata. 
Polymorphina angusta. 
Polymorphina lactea. 
Polymorphina longicollis. 
Globigerina cequilate ralis. 
Globigerina bulloides. 
Globigerina conglobata. 
Globigerina digitata. 
Globigerina dubia. 
Globigerina helicina. 
Globigerina injlata. 
Globigerina rubra. 
Globigerina sacculifera. 
Orbulina universa. 
Hastigerina pelagica. 
Pullenia obliquiloculata. 
Sphceroidina dehiscens. 
Candeina nitida. 
Truncatulina haidingerii. 
Truncatulina wuellerstorf.. 
Pulvinulina menardii. 
Pulvinulina micheliniana. 
Pulvinulina patagonica. 
Pulvinulina pauperata. 
Pulvinulina tumidg. 
Rotalia soldanii. 
Nonionina umbilicatula. 
