2 6 Of Bones. 
of a fhin-bone, which when viewed by the naked eye, 
appeared no bigger than the fpot, fig. M. 
A B C D is the fame piece of bone magnified, E 
F G is the point of a very fmall needle, upon which 
this little piece of bone m was ftuck for examination be¬ 
fore the microfoope, he was not able to reprelent the 
firft fort of thefe little tubes in the picture, becaufe 
their furface was fo mangled in cutting; but the fecond 
fort is reprefented by the letters HHH, the third fort 
by the letters III, which are feldom circular, but o 
different ftiapes, like the great veifels in wood. The 
fourth fort are a great deal larger, as fhewn by the let¬ 
ters K K. The curved lines L and M are little clefts 
or cracks made by the knife in cutting. 
To examine the bones, (have off with a very .{harp 
razor thin pieces of them crofsways, lengthways, and 
obliquely, and that from the infide, outfide, and middle 
of the bone: then apply to the microfcope fome of 
thefe fliavings dry, and others moiftened with warm 
water, by which means you may view the veficles in 
all directions. Or put the bones in a clear fine till 
they are red hot; then carefully taking them out, you 
will find the bony cells perfect and entire, and being 
quite empty, may be view’d with great eafe and pleafure. 
They may be applied to the microfcope either upon 
hollow glafs, or ftuck upon the point of a very fmall 
needle, which needle may be held between the nippers 
of the apparatus, and thereby examined with eafe, and 
little bits thereof may be preferred between the talcs in 
an ivory Inder. 
m Arc. Nat. Tom i, p. 2ooi 
