§2 Mr. Stokes’ Observations on Volvox Globator. 
Their spines were clearly developed, and appeared more closely set 
than in the specimens usually met with; and this circumstance, connected 
with their darker colour, suggests the idea, that the outer membrane or 
integument of the animal is distended as it increases in size. The parent 
animal was unusually large and transparent, and almost colourless, as if 
by distention, and the spines were proportionately more distant so as to 
confirm this supposition : its motion was much more languid than usual. 
After a time the glass, containing this individual, was removed in order 
to place other objects under the microscope. It was soon however 
remarked, that two of the small ones were separated and moving 
about in the glass, which was in consequence immediately replaced for 
observation, The larger Volvox now shewed an opening or laceration on 
one side, which was always hindmost as the animalcule moved; and its 
shape was as here represented. 
NO 
The other two small ones soon passed through the opening, when they 
immediately moved freely in the usual manner of these animalcules, and 
with a rapidity strongly contrasted to the languid motion of the parent, 
which continued to move as before, and its transparency was such, that it 
was not possible to definethe edge of the lacerated part between the spines. 
The closest attention and variation of the light did not detect any 
appearance whatever of internal organization. After an hour had elapsed 
the observations were discontinued, but during that period the motion 
was uninterrupted, and there did not appear any tendency in the lacerated 
part to collapse or alter its form. On examining many individuals which 
contained young ones of different sizes, it appeared that the young pro- 
ceeded from points on the internal surface, to which, as in other 
gemmiparous animals, they remained attached while continuing to grow. 
The number of young varied in different individuals, from two to five. 
W. J.B. 
