292 VENOMS 
pain is excruciating, and sufferers have been observed to become 
actually delirious, striking and biting those around them, throwing 
themselves from side to side, and beseeching that the limb should be 
cut off; some of them have amputated the injured part themselves. 
This condition is accompanied by considerable anxiety, and by 
attacks of leipothymia and sometimes of syncope. In some cases 
syncope has been followed by death; in others serious phlegmons, 
complicated by septicæmia, supervene. The inoculated spot be- 
comes bluish, and then sphacelates over a larger or smaller area. 
These gangrenous wounds heal very slowly, more especially since 
they are usually produced on the sole of the foot (Bottard). 
A single drop of the venom is sufficient to kill frogs in about 
three hours. 
Fig. 102.—Cottus scorpius (Sea Scorpion). (After Savtschenko.) 
The genus Cottws, which also belongs to the family TRIGLIDÆ, 
includes some forty venomous species found in the seas of the 
northern hemisphere, in Europe, Asia, and America. 
In France the species of Cottus are generally called chabots 
(bullheads or miller’s thumbs), chaboisseaux (sea-scorpions), or 
caramassons. They are abundant on the coast of Normandy, 
and some of them (river bullheads) live in fresh water; they 
do not exceed 25 cm. in length. They have a liking for holes 
