JOURNAL OF MICROSCOPICAL SCIENCE. 
EXPLANATION OF PLATES VIII & IX, 
Illustrating Mr. Schifer’s paper on the Structure of the 
Pacinian Corpuscles considered with reference to the 
Homologies of the several parts composing them. 
Fig. 1.—Stalk of a Pacinian corpuscle treated with nitrate of silver, 
showing the two epithelioid layers of cells belonging to the outermost 
tunic continuous with those of the corresponding layer of the neurilemma, 
N, of the nerve. 
Fig. 2.—Small portion of a Pacinian corpuscle, showing the mode of 
entry of the nerve-fibre into the core (osmic acid preparation). m s, nerve- 
fibre, with medullary sheath (stained dark), the primitive sheath is seen on 
either side; p s, primitive sheath of the nerve turning outwards to pass 
between the inner striated part of the core, c, and the outer nucleated part ; 
ef, fibrillated axis-cylinder of the nerve-fibre continued into the core as 
the central fibre ; e, series of innermost tunics of the corpuscle enlarged at 
their extremities (the transverse fibres in their interior are seen in section 
as mere dots); z, nuclei between adjacent tunics. Between the ends of 
these innermost coats of the Pacinian and the nerve fibre is the delicate 
tissue of the endo-neurium with irregular nuclear bodies similar to and in 
continuity with those (z') of the outer part of the core. 
Fig. 2a.—Core of a Pacinian corpuscle, as seen in transverse section 
(from an osmic acid preparation) ; ¢ f, central fibre; 7c, inner part of the 
core, appearing faintly striated concentrically to the axis except at one 
place where the outer part (0 c) of the core encroaches somewhat upon it. 
This outer part is seen to be made up mainly of delicate nucleated cells ; 
n, a flattened"nucleus, lying next to the inner core: 7 ¢, innermost tunic of 
the corpuscle bounding the core externally; between them a space; 
s (lymphatic ?). 
Fig. 3. —Two Pacinian corpuscles connected by the nerve-fibre, which is 
seen passing entirely through the smaller one, A, without loss of its medul- 
lary sheath ito terminate in the larger one, B, the medullary sheath being 
also continued a short distance into the core of the latter; x’, as in figure 
2; «a, the outermost tunics of the corpuscle are shown to be continuous 
