Reviews and Records in Anatomy and Physiology. 93 
kind. But in the three classes of the Articulata,—the Crustacea, 
the Arachnoide, and the Insecta, and in all the classes of the 
Vertebrata, it forms by far the larger portion of the muscular sys- 
tem. Wherever found, it is invariably the same as to the formula 
of its development and constitution, and whatever may be said 
as to the interpretation to be put upon this or that appearance, 
there can be no doubt but that it is always capable of being re- 
solved into the same primary and secondary elementary forms. 
The best specimens of muscular tissue, for the careful, detailed, 
and successful study of its elementary constitution are found in 
the Articulata, or, to speak more definitely from our own experi- 
ence, in the Entomostraca of the Crustacea, or in the Neuroptera 
and Diptera of the Insecta. Our best and most satisfactory ob- 
servations have beeu made upon the alary muscles of the com- 
mon Musquito (Culex pipiens), and which we could particularly 
recommend to those who would follow this line of inquiry. 
have above named on our list. We know of no paper of its pre- 
tension which has met with such universal disfavor among inves- 
tigators. But the misfortune of the case is, that this view should 
have again been produced in a resuscitated form, aud pushed to 
its ultimatum even with new statements, as has recently been 
done in the last two writings we have cited of this observer. 
! he paper published in Miiller’s Archiv appears under the pres- 
iige of being wrought out in many of its most important points 
with a most excellent Pflossel microscope, and as a whole pre- 
pared under the eye of the venerable Purkinje. 
In truth, it would appear that Mr. Bowman’s excellent researches 
to which we have already alluded, ought to have so far settled 
any disputation on these points, as to render any critical exami- 
nation of these anomalous doctrines wholly uncalled for. ut in 
our late review of this whole subject, we have not been unmind- 
ful of this theory, and particularly so since excellent opportunities 
have occurred showing what we believe to be the true version 0 
as unfrequent, singular, spiral-like appearances observed in this 
issue 
In the first place, we will say, that with the advantage of the 
use of some of Mr. Spencer’s best and most powerful lenses, em- 
ployed with the most favorable illumination, we have given sev- 
eral protracted sittings to the investigation of the nature of Dr. 
Barry’s alleged phenomena, with his figures before us, and using 
