Miscellaneous. 155 
the material contained within the organic cells intermediate to the 
cell-wall and the nucleus. 
The cell-wall and nucleus are the agents im connection with the 
organic force which produce or elaborate the contained matter. And, 
indeed, this is the ultimate fact of all organization ; for all the innu- 
merable objects of living nature, with such variety of form, composi- 
tion, and colour, from the simplest to the most complex; from the 
vibrionic filament to the noble oak, from the Bodo, or Monas, up to 
man, are the result of a force in connection with an amorphous vesi- 
cle, the organic cell-wall, with the contained nucleus. Wonderful, 
indeed, is it that the human mind at length has been enabled to 
penetrate so deeply into the mysteries of nature as to discover the 
starting-point of life, the stile at which an invisible intangible cause 
operates in the production of all those bemgs we call organized. 
From this digression I return once more to the consideration of the 
odoriferous glands. In many of the higher animals, the structure 
of these has been carefully investigated, but not to the same extent 
in the lower animals. 
In Hemipterous insects these bodies are situated within the pos- 
terior part of the metathorax or anterior part of the abdomen, and 
consist of one or two, more or less long and convoluted ceeca, which 
open exteriorly usually between the coxze of the middle and posterior 
legs. 
“In the carnivorous Coleoptera they are situated im the posterior 
part of the abdomen, on each side of the rectum, and usually open 
exteriorly upon the membrane, connecting the inferior and superior 
plate of the last abdominal segment on each side of the anal aperture. 
They generally consist of a number of follicles, which converge to 
one or more ducts, which join the neck of a reservoir for containing 
the secreted fluid. A number of these are figured by Dufour in the 
‘Annales des Sciences Naturelles’ for 1826. 
In the genus of Myriapoda, Julus, the odoriferous glands are 
placed upon each side of the body, every segment which has a double 
pair of legs possessing a pair of the glands, commencing anteriorly 
with the sixth segment, excepting the head, and terminating pos- 
teriorly with the penultimate segment. As the number of segments 
of the animal varies with its age, so will also the number of the 
odoriferous glands. The adult Julus marginatus has usually fifty 
pairs ; the Julus maximus, from New Grenada, 8. A., has fifty-eight 
pairs, &c. 
The orifices of these glands opening exteriorly, correspond to a row 
of minute black dots on each side of the body, situated about midway 
between the superior and inferior median line. 
The glands of Julus consist of a globular body or sac, with an elon- 
gated conical neck, and resemble in form a Florence flask with the 
mouth drawn to a point. In Julus marginatus they measure 11 line 
long, the body being 4 of a line in diameter. In structure they con- 
sist of an amorphous transparent basement membrane covered upon 
the interior surface with a single layer of secreting cells. The cells 
are polygonal, from mutual pressure, measure 1-1612th inch in dia- 
