FAT MUSCLES BLOOD VESSELS 



55 



Adipose tissue. Representing the so-called hibernating gland, 

 multiocular fat masses are found in the rat (Rasmussen, '23) in 

 all of the localities where they have been described, namely: 

 in the cervical, scapular, axillary, thoracic, renal and inguinal 

 regions. The proportion of fat (boiling alcohol extract) has 

 been determined by Hatai ('17) in a series from birth to matur- 

 ity (see table 166). 



TABLE 20 



*Same as 'squamosal distance', figure 1, p. 51. 



TABLE 21 



4. Muscles. Morpurgo ('98) has furnished data oft the Muse, 

 radialis of the albino rat; giving the number of muscle fibers 

 and of nuclei at different ages (table 21). 



5. Blood vessels and lymphatics. Blood vessels. Using six 

 groups of rats, those of each group being similar in body weight, 

 but neglecting sex, Dreyer, Ray and Walker ('12) have deter- 

 mined the relation of the area of the cross-section of the aorta 

 (in mm.) to the area of the surface of the body and to the body 



