558 



ANATOMY OF VERTEBRATES. 



the proper tissue, throughout the whole organ. This tissue con- 

 sists of the ( licnine ' or spleen-substance and of ' splenic corpus- 

 cles.' If a portion of the trabecular tissue be treated with acetic 



acid, muscular fibre-cells may be seen, 

 as at of, with their nuclei h, intermixed 

 with the yellow elastic fibres <?, fig. 

 431. The demonstration is easiest in 



431 



a 



432 





d 



WA ' x Kv^ 

 ^4 K l \ ~ 



Trahecula from the gplorn of a Tig: 

 magn. 350 diara. ccvin". 



Splenic or 'Mnlpifrliirm 1 corpuscles, on branches 

 of an nrteriole: from the spleen of the Pig, 

 magi). 10 diam. ccvin". 



433 



a 



the most delicate plates of the trabecular tissue, especially in 

 quadrupeds. The splenic corpuscles, fig. 432, c, c, are whitish 

 spherical bodies imbedded in the ( lienine ; ' most constant and 

 conspicuous in ruminant, equine, and some other quadrupeds ; 

 less conspicuous, or wanting, in adult human spleens, especially 

 after lethal disease. They are elliptical, averaging 

 one-sixth of a line in diameter, and are attached by 

 short peduncles to splenic arterioles a, b, the pedun- 

 cles being continuous with the sheaths accompany- 

 ing those vessels. Treated with a little dilute 

 alkali, the proper wall of the corpuscle, fig. 417, a, 

 i g rendered more distinct, and the elastic fibres of 



the same > b > ma 7 be seen ' in connection with the 

 branch of the arteriole c, to which it is appended. 

 The corpuscular capsule is filled by a semi-fluid greyish mass, 

 including nucleated corpuscles, fig. 433. They have suggested 



