ee 
the oculomotor neurites extending into the ventral prolongation of the 
nerve. These neurites run nearly at right angles to the axis of the 
ganglion. My observations in regard to the absence of a radix brevis 
are in accord with those of Holtzmann (’96), but differ from those of 
v. Lenhossék (:11), who figures for the ciliary ganglion of the hen a 
distinct short root free from ganglion cells. In the light of my experience 
this appears to be an exceptional condition. Sections through the ciliary 
ganglia of the pigeon and duck show that in these forms also (as 
Holtzmann likewise observed) the ganglion is placed directly on the 
trunk of the third nerve. 
Connection of the Ciliary Ganglion with the Ophthal- 
mic Division of the Trigeminus. From the distal (cephalic) end 
of the ciliary ganglion a comparatively large nervus ciliaris brevis (Fig. 
1, n. cil. brevy.) proceeds directly to the eyeball. Microscopical exami- 
rm. ophth. trig. rm. comn. 
n. cil. long. 
n. cil. brev. 
j : e gn. cil. 
n. oc’mot. rm. mu. rt. v. 
Hige 4. 
Dissection of the ciliary ganglion and connecting nerves in the hen. Gn. cil., 
ciliary ganglion; n. cil. brev., short ciliary nerve (nervus ciliaris crassus); n. cil. 
long., long ciliary nerve; n. oc’mot., oculomotor nerve; rm, comn., communicating 
ramus;:-rm. mu. rt. d., branch to dorsal rectus muscle; rm. mu. rt. v., branch to 
ventral rectus muscle; rm. ophth. trig, ophthalmic division of trigeminal nerve. 
nation shows that this large nerve (nervus ciliaris crassus of Holtz- 
mann) is accompanied by a variable number of smaller fiber bundles. 
These arise from the main nerye as it emerges from the ciliary ganglion, 
or one or more of these smaller nerves may spring directly from the 
end of the ganglion itself. 
In dissections a slender communicating ramus (rm. comn.) from 
the ophthalmic division of the trigeminus may readily be observed 
passing to the nervus ciliaris crassus, with which it appears to unite 
about one mm. distal to the ciliary ganglion. This communicating ramus 
