90 
Cruce & Cruce 
PO, Nucleus posterior hypothalami 
PP, Nucleus periventricularis preopticus 
ppc, Posterior pallial commissure 
PR, Nucleus premammillaris 
PRD, Nucleus pretectalis dorsalis 
R, Nucleus rotundus 
SB, Subcommissural organ 
SC, Nucleus suprachiasmaticus 
sm. Stria medullaris 
SO, Nucleus supraopticus 
sod. Supraoptic decussation 
tc, Tectal commissure 
VB, Nucleus ventrobasalis 
VE, Ventricular ependymal organ 
VL, Nucleus ventrolateralis 
VM, Nucleus ventromedialis thalami 
VMH, Nucleus ventromedialis hypothalami 
vp. Ventral peduncle of the lateral forebrain 
bundle 
ACKNOWLEDGMENTS 
We wish to think Mr. T. Nevin for photographic 
assistance. 
This work was supported in part by the following 
grants: Johns Hopkins Institutional Grant M. 11. 2096 
to J.A.F.C., NSF Grant BMS75-09643 to W.L.R.C., 
GRS Grant 5 SOl-RR-05351-14 to W.L.R.C., NIH 
Grant 5 POl-NS-06225 to the Department of Neuro- 
physiology, University of Wisconsin and NSF Grant 
17835 to Dr. Ruth Bleier. This work was initiated 
while the authors were at the University of Wiscon- 
sin, Madison. 
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