in Anatomy and Physiology. 255 
tive, the tubular or conductive. The former composes the grey 
substance of the ganglia or nervous centres, the latter forms their 
medullary portion and the nerves. ‘The question at issue of late 
among microscopical anatomists, is, what is the precise anatomical 
relationship between these two portions of nervous matter. Do 
e€ primitive nervous fibres enter the grey matter, wind about 
oie ong the nerve-cells and ganglionic globules, and finally ter- 
minate in looping anastomoses, as has been advocated by our 
earlier observers; or do these primitive fibres terminate infundi- 
buliform in ganglionic vesicles, as has recently been advanced by 
some of our best microscopical observers ‘ 
The decision of this point is 3 Sa in connection with the 
origin and transmission of nervous 
e will refer briefly to the histotiéal relations of this subject. 
Many years since, Remak discovered in the nervous tissue, large 
vesicular bodies which had irregular digital prolongations. These 
cations he maintained were continuous into the grey fibres 
the nervous substance. This view was soon after verified by 
Hannover, who after some extended research, concluded that the 
nervous centres contained two kinds of ganglionic vesicles, those 
which were simply and those which had processes which 
Were continuous with the nerve fibres. Since then there have 
followed not a few hambess with results of a similar import, and 
Whose names we have indicated below.* Chief among these, 
For the sake of convenience of future reference, we here give the names of those 
éuaeee ers who have studied this subject. 
Re, np edges Observ. anat. micros, de Syst. nerv. Struct. Berlin, 1838; also in Miiller’s 
re. 
nig evvaeh rill ees 1840, p. 555; also Recherch. micr. sur le Syst. nerveux 
Hetmbatk, t De rk nas Syst. nervy. evertebr. Berlin, 1842, p. 10. 
Will, Miller s Arch. 1844, 
Killiker, Die Selbstindizkeit w und Abhiindi eit des sympathischen Nerven: 
nsys- 
tems, 1844; also “ Neurologische Bemerkungen ” in Siebold & Kolliker’s, Zeitsch. 
f i, 1849, p. 135; also “ petty " Anatomie,” ii, 1850 , p. 390-546. 
i 2. 
Budge, Ros 
Hyrtl, peas e, p. 1 
Bardeleben. , Millers beaks ties oi p. 84. 
ing bers 6, p. 7 
Schiff, Gr. 
Schwann, Ann. des Se. Riler, 1846, vi, PL. v1, vi. 
Biddex u. Volkmann, Zur Lehre v. d. Verhiltniss d. Ganglien-kérper zu d. Ner- 
veri-fasern, 1847. 
Reference may be also made to the following where the subject is incidentally, 
or in course illustrated. 
Bruch, Ueber das Nervenssystem des Blutegels, in Siebold u, Kélliker's Zeitsch. 
f. Zs uF 1849, p. 164, Taf. xii. ee 
7 © Bock. ab: b, Carinaria, Firola und Amphicora, Thid. it, 1851, p. 
325, ‘Tat 
Miler, ie te Transl by Jourdan, Littres Ed., Paris, 1851, i, p. 560, where 
aloo’ Robin’ 's views are quoted. 
