Monthly Microscopicall 
Journal, Sept. 1, 1869. J 
of the Dee^ Sea. 
163 
presented themselves ; but, with the exception of the ordinary 
Glohigerina and Orbulina, these were not remarkable either for 
number or size. The Gldbigerina-mud brought up in large 
masses by the dredge exhibited the same characters as had been 
previously determined by the examination of soundings ; but it 
included a large amount of animal hfe of higher types, whilst it 
seemed everywhere permeated by the protoplasmic Bathyhius of 
Huxley, as described in the author's ' Preliminary Keport.' The 
Glohigerinse vary enormously in size ; and the author gives reason 
for the belief that this variation is not the result of growth, but 
that the small as well as the large individuals have, speaking gene- 
rally, attained their full dimensions. He describes the sarcodic body 
obtained by the decalcification of the shell, and discusses the ques- 
tion whether (as some suppose) Orbulina is the reproductive seg- 
ment of Glohigerina, as to which he inclines to a negative conclusion. 
He describes the curious manner in which the shells of Glohigerinse 
are worked-up into cases for Tubicolar Annelids ; of which cases 
several different types presented themselves, the Foraminiferal shells 
in some of them being combined with sponge -spicules. A remark- 
ably fine specimen of Textularia was met with alive, of which the 
porous shell was encased by sand-glains ; this being laid open by 
section showed the sarcodic body of an olive-greenish hue, corre- 
sponding with that of the Lituolse and Astrorhizm, also found alive. 
The family Lagenida was represented by a large and beautiful 
living Cristellaria, that closely corresponds with one of the forms 
described by Fichtel and Moll from the Siennese Tertiaries, whilst 
even exceeding it in dimensions. 
These results conclusively show that reduction in the size of 
Foraminifera cannot be attributed to increase of pressure, since the 
examples of Cornuspira, Biloeulina, and Cristellaria found at 
depths exceeding 500 fathoms, were far larger than any that are 
known to exist in the shallower waters of the colder temperate zone. 
But as these all occurred in the warm area, whose bottom-tempera- 
ture indicates a movement of waters from the equatorial towards the 
polar region, it is probable that their size is related to the tempera- 
ture of their habitat, which is found to be in like relation to the 
general character of the Fauna of which they formed part. On 
the other hand, as we now know that the climate of the deepest 
parts of the ocean-bottom, even in equatorial regions, has often (if 
not universally) A rctic coldness, the dwarfing of the abyssal Forami- 
nifera of those regions is fully accounted for on the same principle. 
Besides these examples of new or remarkable forms of Forami- 
nifera, the ' Lightning ' dredgings yielded some peculiar bodies, the 
examination of which would seem to throw light upon the obscure 
question of the mode of reproduction in this group. One set of these 
are cysts, of various shapes and sizes, composed of sand-grains loosely 
