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A bacteriologist frequently finds occasion to demonstrate cultures of micro-organisms, either to student classes within or near the laboratory or at meetings at some distance. In such circumstances it would be desirable to have not only some light and compact receptacle for such cultures, but also one in which the cultures could be shown to the best advantage.
It was for just such an occasion that, in looking about for a proper demonstrating case, I finally invented the form of folding paper display case shown in Figure 1.
This case is easily made by using a No. 160 white card paper. The design is mapped out, cut and creased, as indicated in Figure 2. The holes are punched out with a ⅝-inch die. The case is then folded, fastened and put away until it is to be used. When the cultures to be demonstrated are ready they are placed in
Smirnow MR. 1. A FOLDING PAPER DEMONSTRATING CASE FOR BACTERIAL CULTURES: 2. A PAPER INSET ANIMAL NECROPSY TRAY. JAMA. 1915;LXIV(19):1579–1580. doi:10.1001/jama.1915.25710450001018
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