ARRANGING AND CATALOGUING MICROSCOPIC SPECIMENS. 249 



and yet reqiiired for special purposes, I will describe its 

 arrangement, and the catalogues which I use with it. 



My collection is divided into three parts, viz. — A, a 

 general one for diatoms, plants, insects, minerals, &c. ; and 

 two special ones, B for normal, and C for pathological histo- 

 logical preparations. 



Each of these divisions has a separate catalogue, and as 

 each of these is drawn up in a precisely similar fashion, I will 

 describe that for normal histological preparations, as it is the 

 most complete. 



It consists of a simple alphabeted note-book, in which is 

 contained an alphabetical index to everything contained in 

 every preparation, each reference being numbered according 

 to the numbers on the slides. These are placed in the 

 cabinet without any regard to arrangement, aud simply num- 

 bered consecutively, thus — 7, Auerbach's ganglia ; 8, stomach 

 of dog, showing gastric peptic glands ; 9, voluntary muscle, 

 &c. As the collection increases, aud a new cabinet is 

 required, the numbers are continued as though there were but 

 one cabinet. 



To show the method of entering in the catalogue the con- 

 tents of each preparation, I will run over my specimens of 

 small intestine. 



Under the heading " I " is found : — 



Intestine small, 106, 107, 108, 109, 117, 120, 209, &c. 

 Muscular coat, external trans, sect. 108. 

 „ ,^ long. sect. 



„ internal traus. sect. 



„ „ loug. sect., 108. 



Villi, 106, 107, 108, 117, 120, *149, 150, 162, 207, 208. 

 „ epithelium of, 117, 209, *108. 

 „ muscl. iuvol. of, *207, 149, 150. 

 „• lacteals of. 



„ blood-vessels of, 120, *106, 107, 108. 

 „ lymphatic tissue of, 207, 208, 149, 150. 

 Peyer's patches, 109, 147, 148. 



„ „ columnar epithelial cap of, *209, 147. 



Peyer's patches, trabeculse of, 147, 148. 



„ „ lymph-corpuscles of, 147, 148. 



„ „ vessels of, 109. 



Brunner's glands, 117. 



„ vessels of, 117. 



Lieberkuhn's glands, from surface. 



„ vert, sect., 106, 107, 108, 117. 

 „ „ trans, sect. 



„ „ vessels of, 106, 108. 



Muscularis mucosae, 207, 150, 107. 



Liebeikuiin's glands penetrating, 107. 



Brunner's glands „ 



Peyer's „ „ 209. 



