File:Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct - for the use of schools and colleges (1870) (14779544151).jpg

Identifier: outlinesofcompar00agas (find matches)
Title: Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges
Year: 1870 (1870s)
Authors: Agassiz, Louis, 1807-1873 Gould, Augustus A. (Augustus Addison), 1805-1866 Wright, Thomas, 1809-1884
Subjects: Physiology, Comparative Zoology
Publisher: London : Bell & Daldy
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
take placeindependent of either the muscular or nervous systems (§ 211). transverse streaking upon the several isolated primitive fibrils (Fig. 63, A.and B). It would seem that transverse sections ought to supply thesurest grounds for conclusions; but no such thing as a sheath can ever Fig. 61. Fig. 61.—Structureof human muscle ; aportion of the attol-lens auriculas, whichhad been long keptin spirit. A, A num-ber of primary mus-cular fasciculi mag-nified about 200diameters. B, A sin-gle fasciculus morehighly magnified. C,Some fibres of cellu-lar tissue interposedbetween the muscu-lar fasciculi. Fig, 62.—Muscular fibre,after Skey.(Philo8.Trans.1837.) A, Fi-bra Muscularis—primitivemuscular fasci-culus. Supe-riorly the pri-mitive fibresare separatedfrom eachother; the glo-bules are blood-discs to serveas standards forthe estimationof their diame-ter. B, A pri-mitive muscu-lar fibre, to show how the transverse striae are produced, and that they may be ^eve-rally seen as elevations.
Text Appearing After Image:
96 CILIAET MOTIONS. The peculiar motory phenomena that fall under this class wereknown to the older naturalists, but their more successful inves-tigation was reserved for our day. Ciliary motions may be most conveniently studied with themicroscope, on portions of the mucous membranes ; that fromthe mouth of the frog is most readily obtained, placed on aglass slide in a drop of water, then covered with a small pieceof thin glass, and viewed with a fourth or an eighth of an inch with certainty be shown in the circumference of the muscular fibres, how.ever prepared by hardening, &c. The intimate structure is excellentlydisplayed, both by Bowman and Henle, as also in the accompanying figures. Fig. 63. j .. Fig. 63.—Two primary mus-cular fasciculifrom the dor-sal muscles ofa rattle-snake,which had beenlong kept inspirits. At *and*fine fibresare seen dis-tinctly brought,into view byseparating themuscular bun-dles ; they seemeach to consistof several pri-mary or ulti-mate fibres. B, Tw

Note About Images