The gray substance of the medulla oblongata and trapezium / by John Dean.

  • Dean, John, M.D.
Date:
[1864]
Catalogue details

Licence: Public Domain Mark

Credit: The gray substance of the medulla oblongata and trapezium / by John Dean. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    PREFACE. The principal object in view, in the following memoir, has been to give the entire topography of the medulla oblongata and trapezium, with illustrations from a series of photographs, the negatives of which have been prepared solely by myself, and have in no case received any retouching. Over two years of constant study have been devoted solely to this investigation, the results of which, both descriptive and histological, I have constantly endeavored to render as trustworthy as possible. It was my original intention to comprise, in the same communication, the anatomy of the pons Varolii, including that part of the human pons corresponding to the trapezium. Such a plan, however, would have been attended with many diffi- culties, besides a great increase in the number of illustrations, and it has therefore seemed best to present the second part of this paper in a form which I am well aware is quite incomplete, with the hope of extending it at some future time. A limited number of photographic prints from the original negatives have been prepared by myself for private distribution, and from these negatives other copies may be obtained, which will be supplied, as far as possible, either on direct applica- tion to the author or through the medium of the Smithsonian Institution. For the labor and patience bestowed on the photo-lithographs by Mr. L. H. Bradford, and for the conscientious care and skill with which Mr. J. W. Watts has engraved my histological drawings, I owe and gladly render my most grateful thanks. JOHN DEAN. 11 Louisburg Square, Boston.