OBJECTS FOR THE MICROSCOPE. 
333 
PARTS OF ANIMALS. 
Pores of Che Skin may be examined by cutting off a thin slice from 
a »y soft part of the body that is not hairy, such as from between the 
fingers, with a razor or sharp penknife — this is a transparent object. 
Hair. — The hairs of different animals vary widely in their appear- 
ance, as also the hairs from the various parts of the human body, and 
"’■H furnish a pleasing series of objects. 
Calcined Bones.— Bones should be heated red hot in a dear fire, by 
"'hich means all the animal juices will be destroyed, and little will be 
feft but pure lime of a most delicate whiteness, and highly interesting 
from the beauty' of the cells this is an opaque object. Some useful 
hints on this subject will be found in the 9th volume of the Medico- 
C hirurgical Society Transactions, in a papier by Mr. Howship, which is 
illustrated by plates with the specimens magnified. 
Feathers of Birds.— These afford an almost endless variety of ob- 
jects, both (ipake and transparent. 
Scales of Lizards, Snakes, and Fish.— These should be carefully 
d caused from any dirt or filth ; they may always be cleaned by soak- 
htg in water and brushing with a camel s hair pencil. 
Blood. — The circulation ot the blood may be easiest seen in the tails 
or fins of small fish, which should be placed in a very thin glass tube. 
Crustacea. — Many animals of this Class require the aid of the mi- 
croscope; to the lovers of the microscope they are highly interesting, 
u <ld well deserving their attention, from the little that is known con- 
cerning them : a few of the species arc enumerated in the first sub- 
class of the Crustacea, p. 78 to tJ'J. 
Arachnoida . — Several species of this Class arc very minute; they are 
found beneath the bark of trees, attached to the legs of insects, &c. As 
an example of the care we should take in preparing objects lor the mi- 
croscope, as well as forming an idea of them, it is worth notice to men- 
fr°n, that the figure of the “ Lobster insect (a species of Obisiim) given 
111 Adams's Fssai/s on the ^Microscope, 4to. has a dentation on the outer 
Pact of the inner claw, which is in fact a fracture produced by com- 
pression; this was pointed out to me by my much respected friend 
1- Carpenter, Esq. of Tottenham, who has the identical specimen m 
ilis extensive collection. Many parts of the Spiders form most beau- 
hfnl objects, especially the eyes. The webs of spiders in hedges, gar- 
den gates, and gates in woods, may frequently be examined with ad- 
vantage as these’are nets in which many minute and rare insects may 
be found. 
^cari._This Class of animals have long been celebrated as objects 
for the microscope ; vet it is to be regretted that very little is yet known 
them, most collectors being satisfied by possessing a specimen of the 
cheese mile," to exhibit one of the wonders ot the little world. 
