OF THE COMMON ADIPOSE TISSUE. 129 



number, united by laminous cellular tissue, and fulfilling the 

 office of a reservoir for the fat. It is divided into two kinds: 

 one is the common adipose tissue, or fatty tissue, properly so 

 called; the other is the adipose or medullary tissue of the bones. 



ARTICLE FIRST. 

 OF THE COMMON ADIPOSE TISSUE. 



154. This has been called the fatty cellular tissue, fatty 

 membrane, web, tunick, adipose, vesicles, &c.: it has also been 

 styled the fatty pannicle, because it forms a layer immediately 

 under the skin. 



155. This tissue, for a long time, was confounded, with 

 the cellular tissue, which was sometimes said to contain se- 

 rum, and at others fat, and in the latter case, to constitute the 

 fatty tissue. Malpighi, was one of the first who raised a doubt 

 on this subject, and who saw the fat form a kind of grains at- 

 tached to the blood-vessels. Swammerdam has also seen that 

 the fat is a liquid oil inclosed in little membranes. Morgagni 

 acknowledges, also, that the fat contains grains which he corn-- 

 pares to those of glands. Bergen was one of the earliest 

 writers who distinguished two kinds of cellular tissue, one of 

 which, called by him luminous, corresponds to the fatty tissue. 

 W. Hunter has given the distinctive characters of this tissue, 

 characters afterwards acknowledged, and more or less exactly 

 determined by Jarisen, Wolff, M. Chaussier, Prochaska, Gor- 

 don, Mascagni, myself &c. Haller denies the existence of 

 this tissue, admitting only the areolae of the cellular tissue as 

 parts containing fat; his opinion has been adopted by Bichat, 

 M. Meckel, &c.; we shall see, however, further on, that this 

 opinion is but slightly founded. The fatty tissue has been 

 carefully described in several works,* and figured in some of 

 them.t 



* M. Malpighi, De omento, pinguedine, etc. in ejusd. op. onin et posthum. 

 Bergen, op. cit. W. Hunter, op. tit. Wolff, op. dt. W. X. Jansen. Pin- 

 guedinis animalis consideratio physiologica et pathologica. Lug-d. bat. 1784. 



f Mascagni. Prodrome della grande anatomia. 



