Miscellaneous. 73 
brane of the small intestine of Julus marginatus, Say, occasionally 
from the same membrane at the commencement of the large intestine, 
and also from any part of the exterior surface of Ascaris infecta and 
Aorurus ; entozoa infesting those portions of the intestinal canal of 
this animal. 
The youngest individuals of Enterobrus which I ever detected, 
measured 1-380th of an inch in length by 1-1060th in breadth, but 
the most usual sizes vary from the 1-150th of an inch to the full- 
grown individual. At all ages they contain the same character of 
contents, but in the younger ones the large globules are usually pre- 
dominant, sometimes to such an extent as to exclude the other mat- 
ters. When quite young they are usually more or less clavate and 
straight ; a little more advanced they form a gentle curve, about one- 
eighth of a circle. A little older, the distal half or third becomes 
uniformly dilated, and forms an obtuse angle with the other portion ; 
after this, as it continues growing, it usually forms a single spiral turn, 
becomes uniformly dilated, and thus advances to the full-grown in- 
dividual. The cell-contents consist principally of large transparent 
globules, with granules and protoplasma in the interstices. Frequently 
the cells are found distended with the globules to such an extent that 
the other matters almost, and occasionally even entirely disappear. 
Iodine turns the protoplasma and granules deep yellow or very deep 
brown, and causes the rupture of the globules, when a clear fluid is 
observed to exude ; very slightly coloured purplish, cr undergoing no 
change of colour from the iodine. Solution of iodine, acetic acid, salt 
water, or the prolonged action of water alone, causes a contraction of 
the cell-contents from the sides of the permanent cell-wall, but they 
are still held together by an apparent delicate membrane of the cha- 
racter of a primordial utricle. Frequently in dead individuals, the m- 
terior contents shrink to two-thirds, occasionally to one-third the dia- 
meter of the cell calibre, and almost eight to twenty times the diameter 
of the cell from each extremity, when they have the appearance of a 
shrivelled granular membrane. In these latter cases the characteristic 
globules and granules have disappeared, and their place is more or 
less occupied with water, and yellowish globular, highly refractive 
bodies, which resemble oil. These latter globules vary in size froma 
mere point up to one-fourth the diameter of the cell. The smaller 
ones are contained within the shrivelled primordial utricle with a few 
of the larger ones, and a number of the latter occupy a position be- 
tween the primordial utricle and the cell-wall, apparently formed by a 
conjunction of the smaller globules and an exudation through the 
primordial utricle during the act of contraction consequent upon de- 
composition. They are insoluble in alcohol, but are soluble in ether 
and solution of potassa ; in fact in all their properties they resemble 
oil. Can these oil globules be the result of decomposition ? 
The protoplasma or fluid of the cells is colourless or faintly yel- 
lowish, contracts or coagulates upon the application of alcohol, and is 
coloured brown by iodine, having all the characters usually possessed 
by that albuminoid fiuid found in all young vegetable cells, and deno- 
minated protoplasma by H. von Mohl. 
