173 
much value ; and, moreover, it is well to be on guard against 
similar errors in future in the new ‘ Journal of the Royal 
Microscopical Society/ The repetition of the error and 
complete perversion of the author's sense shows that the 
excuse of carelessness cannot be applied in this case. That the 
translator was puzzled by the contradictious which he himself 
elaborated is apparent from this sentence, which we give as 
printed : — “ In the Heteropoda especially, the otolites are 
suspended from the brain (?) (cerveau), as if from a long 
delicate thread." The inserted note of interrogation 
and French word indicate an unenviable state of bewil- 
derment. 
Professor Lacaze Duthiers' researches have befcn made on 
more than thirty species of Gasteropods, and he has never 
failed to discover the relation of the auditory nerve to the 
cerebral ganglion. Limax, Arion, Helix, Zonites, Clausilia, 
Succinea, Physa, Lymneus, Ancvlus, Neratina, Paludina, 
Testacella, Cyclostoma, Pileopsis, Calyptera, Natica, Nassa, 
Trochus, Murex, Cassidaria, Purpura, Patella, Haliotis, 
Bulloea, Aplysia, Lamellaria, are the genera in which this 
relation has been established. In these investigations oxalic 
acid was used as a re-agent to render the lime crystals in the 
auditory sacs apparent, and thus facilitate their dissection. 
Staining with carmine was also found useful. It will be ob- 
served that Professor Lacaze Duthiers’ researches extend 
only to the Cephalophorous Mollusca. It will be of the 
greatest importance to ascertain how far his results are true 
for the Lamellibranchs. In Anodon the pedal ganglion is a 
very long way removed from the so-called supra-cesophageal 
ganglion, and on that pedal ganglion, supported by a pedun- 
cle, the otolithic sac is to be seen. The hope to establish 
minute homologies between Gasteropods and Lamellibranchs 
is, we are convinced, a vain one, but it is necessary to know 
how far they agree in structure. 
Muscular Tissue. — On the Structure of Striped Muscular 
Tissue. Second article. By. W. Krause. Zeitsch. fur Rat. 
Med., xxxiv. 1st. Part. 
Blood. — Cohnheim’s Views on the Passage of White Blood- 
Cells. 
Dr. Koloraan Balogh opposes the view lately advanced by 
Cohnheim. He observes that the first writer on this subject 
was Aug. Waller, of London, who had already seen, in 1846, 
in examining the mesentery of the toad and the tongue of 
the frog, that the white and red globules of the blood can pass 
outside the walls of the capillary vessels. The different 
details of these observations had led Waller to conclude : 
