STRUCTURE OF THE PACINIAN CORPU 141 
nerve-fibre lies embedded within the neurilemma; indeed, 
this tissue loses in great measure its fibrillated appearance 
as the nerve-fibre approaches the core, and exhibits a con- 
fusedly curdled aspect, which seems due to the presence of 
a number of nuclear bodies like those above described in the 
outer part of the core (see fig. 2). 
The continuity of the outer layers of the Pacinian with 
the corresponding layers of the neurilemma may be readily 
observed even in the fresh condition; moreover, in silvered 
preparations the layers of flattened epithelioid cells which 
bound them are distinctly traceable spreading out from the 
stalk over the body of the corpuscle (Plate IX, fig. 1). In 
teased preparations also the whole of the entering nerve and 
its neurilemma may occasionally be plucked away, with 
those layers of the capsular envelope which are continuous 
with the neurilemma adhering to it. The more internally 
situated coats of the Pacinian seem, on the other hand, to 
be superadded;! near the stalk end of the corpuscle they 
commence abruptly, being attached to the innermost part of 
the neurilemma (Plate VIII, fig. 2) ; this is then prolonged 
around the core to form the innermost layer of the capsular 
envelope, sometimes even a little beyond the core, enclosing 
a prolongation of this; and the inner coats are again united 
with it at the further end, so that they form with the 
enclosed core a tolerably compact mass which it is easy to 
isolate. 
The observations here recorded are in part founded upon 
preparations made by Mr. H. Price, student at University 
College. : 
List of Authors referred to. 
Henle and Kolliker—“ Ueber die Pacinischen Koérperclhen an den Nerven 
des Menschen und der Saugethiere,” Zurich, 1844. 
Jacubowitsch —‘ Comptes Rendus,’ |. p. 859, 1860. 
Ciaccio.— Beobachtungen ueber die Pacinischen Kérperchen aus dem 
Mesenterium der Katze,” ‘ Centralblatt, fiir die medicinischen 
Wissenschaften.’ 26, 1864. 
Hoyer.—* Kin Beitrag zur Histologie der Pacinischen Kérperchen,” ‘ Ar- 
chiv fiir Anatomie,’ 1864. 
Michelson.‘ Lur Histologie d. Vater-Pacinischen Kérperchen,” ‘Schultze’s 
Archiv,’ v. 1869. 
Grandry.—* Recherches sur les Corpuscules de Pacini,” &c., ‘Journal de 
l Anatomie,’ vi. 
Axel Key and Retzius—* Studien in der feineren Anatomie des Nerven- 
systems,” ‘ Schultze’s Archiv,’ ix. 
A. Budge.—* Kinige Untersuchungen ti, das Verhalten der Nerven in den 
Pacinischen Korperchen,” &c., ‘ Vorlauf. Mitth. Central- 
blatt,’ 1873. 
Sharpey.— Quain’s Anatomy.’ 
’ According to K. and R. it is the oufer layers that are superadded. 
