PLATE IX. 







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o. ;;.-<Mnentum of guineapi;,' treat...] with silver. A. One of the principal trabeeulrc, coiitainin;,' l,l..,,,l 

 vessels and fat cells, n. Fenestrated portion, the trabeculic of which are covered with flat endotheliiiin. 

 where it is referred to as flg. 8. (Oc., 3; Obj., 7. Tube of the microscope not drawn out.) 



:i 



FIG. 34. Fenestrated iwrtion of oiuentnni of an apo. Silver pn-paratinii of surface einl.nlielmm. sli.iwiiiK 

 the eudotheliuiu which covers u princijial tral>ecula (6). H re and there cells are seen which have gcrniiiiiitire 

 characters ; and brand ed cells, a. Meshwork of bundles of fibrous connective tissue, p. 29. 



