108 Mr. Gulliver’s Obsermtmis on ike Blood Corpuscles 
vations apart from his hypotheses are generally remarkable 
for their accuracy, laboured under these disadvantages, but 
there is reason to believe that his results were not obtained 
without the most devoted and diligent inc^uiry. 
The discrepancies just alluded to are frequently adduced 
as instances of how little credit should be attached to micro- 
scopical anatomy generally. There does not appear to me to 
be any reason in the objection; first, because it is seldom if 
ever urged by those who are sufficiently acquainted with the 
instrument to enable them to judge fairly of its use; and se- 
condly, the same objection might in like manner be made to 
the use of the unassisted vision in minute anatomy. Who- 
ever has attended to the history of the elementary structure of 
different parts in the animal oeconomy, as given by anatomists 
who have not employed glasses, must be acquainted with dif- 
ferences in the observations, just as remarkable as those which 
have resulted from the use of the microscope. But no one 
ever yet ventured to suggest that the imperfection of our 
senses was a reason why they should be dispensed with. The 
intimate structure of the bones, of the cellular or adipose 
tissues, are, among others, singularly obscured by false ob- 
servations, notable for their number as well as for their dis- 
agreement. Yet the microscope has made these things in- 
finitely more simple. No anatomist would now require to 
found the distinctions between the cellular and adipose tissues 
chiefly on remote physiological phaenomena; no one would 
doubt the difference who had once seen the vesicles of the 
latter by the aid of the microscope. Haller could thus have 
immediately seen and shown to others the proof of that great 
discovery, which required so much labour to demonstrate. 
A curious collection might be given of the errors of anatomi- 
cal observations made by the unaided vision as compared 
with those which have arisen from the use of the micro- 
scope*. But this subject is foreign to my purpose, and I 
have only to repeat the conviction which I have elsewhere 
expressed tj that the minute anatomy of the fluids, both 
healthy and diseased, is of the utmost importance, and that 
the steady and successful pursuit of this object will ulti- 
mately be the foundation of a new sera both in physiology 
and pathology. 
76. Orang-outang, (Pithecus Satyrus,) a female, about a 
third grown. All the following sizes very common; l-3552nd, 
* On the limits of vision with the best instruments there is an ingenious 
paper by Ehrenberg, of which we are indebted to Mr. Francis for an excel- 
lent English version. See Taylor’s Scientific Memoirs, Part iv. 
f On the Softening of Fibrine, Med. Chir. Trans., vol. xxii. 
