THE CONNECTIVE SUBSTANCE GROUP. C9 



a covering over them. In the larger trabecles, however, there are connec- 

 tive-tissue corpuscles, in addition to those just mentioned ; they are well 

 seen in profile, interposed between the bundles (Fig. 26). 



Adenoid tissue (Fig. 27). Adenoid tissue is the name given 

 to the delicate substance that forms the framework of the lym 

 phatic glands. It consists of fibres in networks which form an 



FIG. 27. Adenoid tisane from a human lymphatic glnnd. 



intricate texture, that is filled with the rounded bodies com- 

 monly known as lymphoid cells. It is exceedingly difficult to 

 analyze these tissues, because it is not easy to demonstrate any- 

 thing that conveys to the eye our idea of a cell, i. e., excepting, 

 of course, the lymphoid corpuscle. The best mode of proced- 

 ure is the following : Take a lymphatic gland such as the in- 

 guinal in the early stage of inflammation : harden at first, in 

 Mueller's fluid, and then in alcohol, and make sections through 

 it. 



On viewing such a specimen under the microscope it will 

 exhibit a delicate meshwork, packed with lymphoid corpuscles 

 (Fig. 27, a). Now, if we take such a section and agitate it in a 

 test-tube with water for a considerable length of time, and then 

 place it upon a glass slide, pencilling it with a camel's-hair 



