56 QUARTERLY CHRONICLE. 
any other. 5. Submucoustissue. 6 and7. Sub-serous mus- 
cular layers, longitudinal and annular. 8. Serous membrane. 
The Gray Substance of the Medulla Oblongata and Trape- 
zium.—Dr. Dean, in his recent researches published at Wash- 
ington, gives some important observations on the decussation 
of the hypoglossal roots, &c. In the medulla oblongata he 
considers that we have three classes of nerve-fibres : 
1. Vagus (spinal accessory) and hypoglossal roots, which 
arise from or terminate in cells in their respective nuclei. 
2. Vagus (spinal accessory) and hypoglossal roots meeting 
in cells. 
3. Vagus (spinal accessory) and hypoglossal roots directly 
continuous. 
He also gives some observations on the olivary bodies, and 
is disposed to agree entirely with Mr. Lockhart Clarke, con- 
sidering that the groups of very large cells from which the 
upper olivary bodies originate, are developed from the remains 
of the antero-lateral nuclei. (‘Amer. Journal Medical 
Science.’) 
On the Conditions of Osteo-genesis with or without pre- 
existing Cartilage. By M. Rosin. (‘Robin’s Journal,’ 
September and December, 1864.)—M. Robin is publishing 
an important series of observations on this subject, which 
he has made during very laborious researches. The papers 
are illustrated by drawings from nature. 
Researches on the Mucous Membrane of the “ col-uterim.” 
By M. Corniz. (‘ Robin’s Journal,’ September, 1864.) 
On the Epithelium of the Urinary Canal. By Dr. H. Lincx, 
(Reichert and Du Bois Raymond’s ‘ Archiv,’ July, 1864.) 
A Contribution to the Histology of the Pacinian Corpuscle. 
By Professor Hoyer. (Reich. and Du Bois Raymond’s 
‘Archiv,’ July, 1864.) 
On the Pathology of Tetanus. By J. Lockuart CrarKeE, 
(‘ Lancet,’ Sept. 3, 1864.)—Of all the diseases to which the 
human frame is subject, while in none more than in tetanus 
the pathology has perplexed inquiries, in none, perhaps, have 
the skill and ingenuity of the practitioner been more variously 
but vainly expended. It is lamentably true that in many 
disorders a complete knowledge of their pathology has been 
but of little avail in pointing to the method of cure; but in 
tetanus we have not hitherto enjoyed even the possible 
advantage of this kind of knowledge, however unavailable 
it may prove; so that the different plans of treatment, which 
are numerous, have been wholly tentative or empirical. 
In this frightful malady it may be said that scarcely any- 
