Tash (OF PLATES. 
Frontispiece. Elaps euryxanthus, Elaps fulvius, and Ophibolus doliatus........++++++++5 
Plate 1. A, B, C, Skull of Homalopsis buccata. D, E, Skull of Distira stokesii......... 
2. A, Skulls of a Harmless Snake and of a Boa Constrictor. B, Skull of Naja 
bungarus. C, Skull and Skeleton of Naja tripudians............ 
3. A, B, C, Skull of Naja tripudians. D, E, Skull of Bungarus candidus....... 
4. A and B, Photographs of Naja tripudsans.... 0s aso c ccc ns sees asarecs ns 
5. A and B, Photographs of Head of Naja bungarus (King Cobra), C, Photo- 
graph of Naja haje (Egyptian Cobra)........ 6. .2cens cece neeseee 
6. A, Bungarus candidus (Common Krait). B, Bungarus fasciatus (Banded Krait). 
C, Elaps fulvius (Coral Snake). D, Callophis..............00005 
7. A, B, C, Skull of Glyphodon tristis. D, E, F, Skull of Elaps marcgravi..... 
8. A, Pseudechis porphyriacus. B, Notechis scutatus. C, Acanthophis......... 
9. A, Distira cyanocincta. B, Enhydrina valakadien. C, Hydrus platurus...... 
10. A and B, Hydrophis. C, Enhydris curtus. D, Platurus laticaudatus......... 
11. A, B, C, Skull of Hydrus platurus. D, E, Skull of Platurus colubrinus......... 
12. A, Vipera berus. B, Cerastes cornutus. C, Cerastes vipera. D, Vipera rus- 
IS CLULA ame tera peta sele tot Lehetei ni APE ue ete tase sckomsuetaysucreteh ooaie eu oiepats ai 
13. A, B, and C, Skull of Atractaspis. D and E, Skull of Bitis arietans. F, Skull 
Ole CZ OLAUSHILOTREUUS ateye Note isla) octets oelshavete ialais siele aisle) 1m aaekora == 
14. A, Ancistrodon hypnale. B, Echis carinatus. C, Bitis arietans............. 
15. Photographs of: A, Skull of Lachesis mutus; B, Skull of Ancistrodon piscivorus; 
C, Skull of Ancistrodon contortrix; D, Skull of Crotalus adaman- 
teus; 3, Rattler of Crotalus adamanteus. .......-- 52-2002 -es008 
16. A, Ancistrodon piscivorus. B, Ancistrodon contortrix. ..........000000e0e- 
17. A, Lachesis mutus. B, Lachesis flavomaculatus. C, Lachesis gramineus. D, La- 
CHESTS ATAPI DT STS oryiufoniro pire Wie in ee aial sles ohe,'6s Sunin) «esedas meee aee.N gia. ei) 6 58K 
Weep AG ATIG EN ACHESIS AUODIFICUS Sal Yelal ebay stead e) «oie ocr) olen) ageiaiene ele mle ne 8’ sin) sia oF 
19. A, Sistrurus catenatus. B, Crotalus adamanteus. C, Crotalus horridus ....... 
20. Venom gland of Crotalus adamanteus: A, Longitudinal section; B, Cross- 
section, showing Tubular Raminous Structure; C, Cross-section; 
D, Portion of Tabular Acinus, showing Columnar Epithelial Cells 
with Nuclev nean Base oi Celly Body... an << isieisisn 2 0)s),0 +0 oe. 
BT) BONES! Ole CFOLBIES, CAMINAILEUS.... oak ac alec clens © «01 0.o 0 osarels ale iris) n)s)¢/stoleie a sie) or6 
22. Musculature of the Poison Apparatus, Head of Ancistrodon piscivorus......... 
23. A, Normal Precesophageal Ganglia of Sycotypus canaliculatus. B, The Ganglia 
actedian yi CObrai VENOM. lari cre sievacr shel sie) esters nie cides! =) seis ic 
24. A, Medulla oblongata of Rana catesbiana (4 hours in physiol. salt sol.) B, The 
same, kept 2 hours in Cobra Venom solution. C, The same, kept 
ACHOUTS Ine IMOCGASIN VERON SOMONE. nareicieie\«(c)-co sels sate elle oie nia = = 
25. Nerve fibers of Rana catesbiana. A, Normal (low power). B, Normal (high 
power). C, Acted on by Cobra Venom for 2 hours (low power). D, 
Acted on by Cobra venom for 2 hours (high power). ............- 
26. A, Hemorrhages from Capillary and Small Vessels of the mesenterial mem- 
brane of Rabbit, under the influence of the venom of Crotalus 
adamanteus. B, Hemorrhagic and Softening Effects of the venom of 
Crotalus adamanteus upon M. pectoralis of Pigeon.............4. 
27. A, Hemorrhage caused by venom of Crotalus adamanteus on the mesentery of 
Guinea-pig. Showing one larger and two smaller ruptures of Cap- 
illary Vessel. B, Hemorrhage caused by venom of Crotalus ada- 
manteus on the mesentery of Rabbit. Showing defect of Capillary 
Vessel wall caused by disappearance of an Endothelial Cell. C. Ham- 
orrhage in mesentery caused by Crotalus Venom in Rabbit ........ 
28. Effect on White and Red Corpuscles of Rabbit. A, Normal rabbit blood; 5 
minutes at 37°C. B, Normal; 24 hours in normal saline at 37° C. 
C, Crotalus Venom, o.5 per cent; 6 hours at 37° C. ........eeeee- 
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