FATS. 249 



of the face, for everyone who has dissected these muscles must 

 have noticed how largely the human face is furnished with fat. 



Large quantities of fat, not constituting so essential and integral a 

 part of the organs, and often almost entirely disappearing, are prin- 

 cipally found under the cutis and in the cellular tissue, investing the 

 muscles, in the interstices of several of the larger muscles, about the 

 gluteei, on the soles of the feet, and in the inner surface of the hands. 

 Fat is frequently fo und deposited insacs around different tendons 

 projecting between the ends of the bones into the joints, where they 

 form special accumulations of fat, known by the name of the 

 Haversian glands. Large deposits of fat are generally found in 

 the omentum, and surrounding the kidneys, constituting the 

 folliculus adiposus renum, which usually contains a harder fat, having 

 a larger quantity of margarin, than occurs in other parts of the 

 body. 



The female breast is always so largely interspersed with masses 

 of fat, that full prominent breasts frequently yield a small quantity 

 of milk, being enlarged solely by the deposition of fat. 



The marrow of the bones consists, for the most part, of fat, 

 which not only remains undiminished, but is even not unfrequently 

 largely augmented in various diseases of the bones, as, for instance, 

 in osteomalacia. This bone-fat is perfectly identical with the 

 ordinary fat of the cellular tissue, excepting that it contains some- 

 what more olein, especially where there is osteomalacia. 



All other parts of the animal and more especially of the human 

 body, are penetrated by fat. The smallest quantity, and indeed, 

 occasionally, not a trace of fat is to be found in the pulmonary 

 tissue, in the glans penis and the clitoris, and, if we except the 

 so-called non-saponifiable fats, in the brain. 



We have already spoken of the occurrence of fat in the animal 

 fluids. The amount of fat in the blood does not vary much in a 

 normal condition, and is, according to Boussingault's numerous 

 investigations,* wholly independent of the amount of fat contained 

 in the food. The blood contains from 0'14 to 0'33 of fat in a 

 normal condition. Boussingault found from 0'2 to 3'0 of fat in 

 the blood of dogs, whether they had partaken of food deficient or 

 abounding in fat, and 0'4 in that of birds. Tiedemann and Gmelin 

 always found the chyle very rich in fat ; and its milky turbidity, as 

 well as that of the lymph, is owing to the fats which it holds in 

 suspension. 



I was unable to discover any trace of Boudet's serolin in the 

 * Ann. de Chirn. et de Phys. 3 Ser. T. 24, p 460. 



