BANDED RATTLE-SNAKE. 327 



great length, beginning near the throat, and run- 

 ning down three feet in length : the upper part of 

 them, for the distance of about a foot from their 

 origin, is composed of small vesiculse or cells, as 

 in the lungs of a Frog ; and which, from the fre- 

 quent branchings of the blood-vessels, appear of 

 a florid red : this part tapers, proportionally to the 

 body : the lowest part of it, near the heart, being 

 moderately blown, is about five inches and a half 

 in circumference : a little lower, for the space of 

 about four inches, the cells gradually disappear, 

 so that they seem at last to form only a reticular 

 compages of mlmdce connimntes on the inside of 

 the membrane of the lungs : the greatest circum- 

 ference here is about six inches : the remaining 

 part of the organ is merely a large bladder, with- 

 out any cellular subdivisions, and consists of a 

 strong, transparent membrane, the circumfer- 

 ence of which, when inflated, is about eight inches 

 and a half The lungs in the Water-Newt, and 

 some other animals, are divided into two large 

 lobes or simple bladders, without cellular subdivi- 

 sions ; in the frog, crocodile, &c. of two large 

 lobes with cellular subdivisions; while in the 

 Rattle-Snake, Viper, &c. both these kinds of 

 structure are comprised ; the fore part of the or- 

 gan being filled with numerous internal vesicular 

 subdivisions, while the remaining part is a mere 

 lengthened bladder. 



The oesophagus or gullet was two feet three 

 inches in length, and marked by two distinct 

 swellings or enlargements of very great size, so 



