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WHAT IS BATHYBIUS ? 651 
"of two types — the one compact and the other loose in tex- 
ture. The largest of the former type which I have met with 
measured about 443559 of an inch in diameter. They are hol- 
low, irregularly flattened spheroids, with a thick transparent 
wall, which sometimes appears laminated. In this wall a 
number of oval bodies, very much like the ‘corpuscules’ of 
the Cyatholiths, are set; and each of these answers to one 
of the flattened facets of the spheroidal wall. The corpus- 
cules, which are about z;554 of an inch long, are placed at 
tolerably equal distances, and each is surrounded by a con- 
tour-line of corresponding form.” “Coccospheres of the 
compact type of -yyy to 2555 of an inch in diameter occur 
under two forms, being sometimes mere reductions of that 
just described, while, in other cases, the corpuscules are 
round, and not more than half to a third as big, though their 
number does not seem to be greater. In still smaller Cocco- 
spheres, the corpuscules and the contour-lines become less 
distinct and more minute, until, in the smallest which I have 
observed, and which is only ysyv of an inch in diameter, they 
are hardly visible." 
“The Coccospheres of the loose type of structure run from 
the same minuteness up to nearly Fig. 101.* 
double the size of the largest of the 
compact type, viz., 74y of an inch in 
diameter. The largest (of which I 48 
have seen only one specimen) is ob- 9e 
viously made up of bodies resemb- 
ling Cyatholiths of the largest size 
in all particulars except the absence of the granular zone, 
of which there is no trace. I could not clearly ascertain 
how they were held together, but a slight pressure suffices 


Fig. 10) 1 is lof, ight ^h h A Tawtnilaria shell , each segment 
of which is sided with Coccoliths. The specimen referred to was rend bee d 
ith numerous others, from a depth of 1913 fathoms (upwards of tw 
the Coasts of Greenland and Labrador." Dr. Wallic eee whom we ceto, M 
rtie n the 

Vital Functions o: beet Protozoa,” Monthly pooner Jik, No. 1, dn. 
1859, 8vo. ocu. — Eds. Nat. 
AMER. NATURALIST, VOL. III. 83 
