64 
life, composed the cesophageal sheath about three inches from the 
stomach, where the gullet had been divided, and no opportunity was 
afforded of examining its last portion. 
30. Chetah (Felis jubata, Linn.).—The muscular fibre of animal 
life was abundant on the gullet ten inches from the stomach, and 
extended more scantily three inches nearer to it. On the last six 
inches of the cardiac end of the gullet no muscular fibre of animal 
life could be found. 
31. Weasel (Mustela vulgaris, Linn.). 32. Stoat (M. erminea, 
Linn.). 33. Polecat (M. Putorius, Linn.).—In these animals the 
muscular fibre of animal life was traced on the gullet to its termina- 
tion in the stomach. 
34, Seal (Phoca vitulina, Linn.).—The muscular fibre of animal 
life extended along the whole gullet, excepting about an inch of its 
cardiac end. 
35. Porpoise (Delphinus Phocena, Briss.).—In a young one 
weighing ten pounds, and said to have been extruded from the mo- 
ther after her capture, June 13, 1842, the muscular fibre of animal 
life could be traced on the gullet no further than four inches from 
its stomachic end. 
36. Paco (Auchenia Paco, Desm.).—The muscular fibre of ani- 
mal life was detected on the gullet to its termination ; an inch and 
a quarter from the stomach the muscular fibre of organic life was 
abundant on the gullet; and the muscular fibre of animal life only 
was found in the cesophageal sheath two inches from the stomach. 
The tissue under the mucous membrane around the water-cells re- 
sembled that of the middle coat of the stomach elsewhere, being 
quite destitute of anything like the muscular fibre of animal life. 
37. Dromedary (Camelus Dromedarius, Linn.).—Muscular sheath 
of the gullet the same as in the Paco. 
38. Wapiti Deer (Cervus Wapiti, Mitchell).—The muscular fibre 
of animal life invested the gullet to its termination. 
39. Cervine (Antilope Bubalis, Pallas).—The cesophageal sheath 
was formed throughout of the muscular fibre of animal life, which 
extended for an inch on the stomach. 
40. Palm Squirrel (Sciwrus Palmarum, Briss.). 41. Common 
Squirrel (S. vulgaris, Linn.). 42. Golden Agouti (Dasyprocta au- 
rata, F.Cuv.). 43. Water Rat (Arvicola amphibia, Desm.).—In these 
animals the muscular fibre of animal life completely invested the 
gullet, being abundant on its cardiac extremity. 
44, Kangaroo (Macropus Bennettii, Waterhouse).—The muscular 
fibre of animal life was plentiful on the upper part of the gullet, and 
terminated between three and four inches from the stomach. 
45. Squirrel Flying Opossum (Petaurus sciureus, Geoff.).—An 
inch and a quarter of the stomachic end of the gullet was without 
the muscular fibre of animal life, which was pretty abundant an inch 
further from the stomach. 
I have ventured to apply the term voluntary to the striated 
muscular fascicles—extending along the entire length of the gullet, 
and even on the commencement of the cardiac extremity of the sto- 
