2450 



Journal of Applied Microscopy 



The card catalogue unit is 9^ inches high over all and holds two drawers, 

 each 301^ inches long by 17 inches wide and 4 inches deep inside. Each of 

 these is divided by partitions from front to back into 5 apartments capable of 

 storing catalogue cards 3x5 inches in size (Fig. 2 a). 



Evch of the units for reference samples is I'l]^ inches high and holds 7 draw- 

 ers 3CM:( inches long by 17 inches wide and 1^\ inches deep inside. By thin par- 

 titions each drawer is divided into five rows of '21 apartments each (Fig. 2 b). 

 The samples are placed in one ounce screw cap jars and when placed in the 

 drawer the labels are in plain view, which is much more convenient than where 

 the jars stand upright. 



•- c •:. <■- . s: ti. »i «. '. i. £«Ba>e>U«as«i 



Fig. 2. 



The unit for storing slides is 16 inches high and carries two drawers, each 

 30^2 inches long by 17 inches wide and 7 inches deep inside. Partitions divide 

 each drawer into three rows of 17 apartments each. Each apartment is 3/8 x 1 y*'^ 

 inches, being thus large enough to receive the conventional slide box holding 25 

 slides (Fig. 2 c). The rear 43/^ inches is left vacant so as to hold the drawer 

 from dropping down when boxes in the back row are being handled. 



We have found the cabinet very convenient in form and it is at present cap- 

 able of holding 12,000 index cards, 1470 reference specimens and 2550 micro- 

 scopical slides. By numbering the slide boxes and apartments of the drawers, 

 and finally cataloguing the collection, any slide can be located at a moment's 

 notice. Burton J. Howard. 



Bureau of Chemistry, U. S. Department of Agriculture. 



