A main cause of discordant views on the structure of the muscular fibril / by Martin Barry.

  • Barry, M. (Martin), 1802-1855.
Date:
1853
Catalogue details

Licence: Public Domain Mark

Credit: A main cause of discordant views on the structure of the muscular fibril / by Martin Barry. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    From the Philosophical Magazine for November 1853. 7 A MAIN CAUSE 4^ OF DISCORDANT VIEWS ON THE ■STRUCTURE OF THE MUSCULAR FIBRIL. BY MARTIN BARRY, M.D., F.R.S, F.R.S.E. [With a Plate.] T LATELY had the pleasure, on more than one occasion, of examining muscle at Glasgow with Prof. Allen Thomson. The microscope used was one of first-rate excellence by Smith and Beck. We saw the states in Plate V. fig. 2 ah and ild~ diawings sent me a few days after by the Professor, accompanied by the following description and remarksPortions of three different muscular fibrilIse from the Prog, presenting various aspects, ah, a fibril splitting into two at c, viz. cd and ce; the part ac is probably double; ce and cd are single, dh ajipears single; but it is possible that it may be double, as e seems to have been separated from c to d. Prom a to c the quadrilateral form of the sarcal particles and the clearer intervening substance prevails; in cc and cf the oval and oblong quadrilateral; from ftod the rhomboidal; and from d to h the rhomboidal, with an appearance of spiral or twist in the intervals.—ff and h are por- tions of another fibrilla, in which the quadrilateral form of the .particles, and the distinction between them and the intervals well marked; in ^ the upper surface is in focus^ ; and the cross mark in the intervals is not seen; in h the focus ' IS adjusted for the deeper or further side, the intervening sub- stance is crossed by a distinct transverse line, and each dark quadrilateral particle presents a central spot, or rather a slightly crucial mark in its centre. Although the portion of fibril here represented appears quite single, I think I can see that at the end a portion of it, not represented in this figure, is split into two smaller fibrils.—two fibrillae separated at one part and united m another; a dislocation of the particles having taken Jiiace, so as to produce an appearance of spiral form even more