Salivary Glands Pancreas. 81 



LYMPHATIC GLANDS. 



The lymphatic glands of the cat are very good for 

 examination, and should be perfectly fresh ; they are 

 best hardened in chromic acid mixture. 



Thin sections should be made with the microtome 

 and stained with logwood. After washing, some of the 

 thinnest should be placed with some water in a test 

 tube and shaken for half an hour or more, to detach 

 the corpuscles from the adenoid reticulum. They must 

 be shaken steadily or they will be knocked to pieces. 

 Two or three sections only should be shaken at one 

 time. They are afterwards mounted in the usual man- 

 ner in Canada balsam. 



It is a good plan to inject a solution of Berlin blue 

 into the lymph channels of a lymphatic gland, to de- 

 monstrate the passage of lymph through it. It is done 

 by inserting the point of a hypodermic syringe, filled 

 with a solution of Berlin blue, through the capsule 

 of a fresh gland, and slowly injecting the colouring 

 matter ; the gland is then prepared in the usual man- 

 ner, and sections cut and stained with logwood. 



THYROID GLAND. 



This may be prepared in precisely the same manner 

 as a lymphatic gland. 



SALIVAKY GLANDS PANCEEAS. 

 May be hardened in chromic acid mixture or in 

 spirit mixture and care must be taken that they are 

 fresh and not over hardened. Sections may be cut by 

 the microtome or by hand and stained in logwood. 



