Sir E. Home on progression, [208];

stimulating influence, [273];

anatomy of a rattlesnake, [275];

Vipera Caudisona, [276], et seq.;

Sir Hans Sloane’s experiments, [281];

early observations, [295];

a venerable cro., [302];

sloughing of reptiles, [331];

mobility of fangs, [370];

reserve fangs, [371];