. Digest of comments on The pharmacopia of the United States of America and on the National formulary ... 1905-1922. er of the sac to the glass tubeat a point just below the constriction by means of heat, pressure,a silk ligature, and additional collodiuni. McCrae, following Prudden, employs a glass tube, to the heatedend of which he attaches a gelatin capsule which acts as a tempo-rary frame over which the collodium is molded. The capsule isthen removed by dissolving it in hot water. In the techniques just referred to there are several delicatemanipulations which greatly hazard the chances of
. Digest of comments on The pharmacopia of the United States of America and on the National formulary ... 1905-1922. er of the sac to the glass tubeat a point just below the constriction by means of heat, pressure,a silk ligature, and additional collodiuni. McCrae, following Prudden, employs a glass tube, to the heatedend of which he attaches a gelatin capsule which acts as a tempo-rary frame over which the collodium is molded. The capsule isthen removed by dissolving it in hot water. In the techniques just referred to there are several delicatemanipulations which greatly hazard the chances of getting a per-fect sac: 1. There is the danger of tearing and destroying the sac in peel-ing it off the rod. 2. There is considerable difficulty in attaching the sac securelyto the glass frame; and, 3. If no frame is used, the sac has no support, may becomeshriveled, and is liable to tear on removal from the animals abdom-inal cavity if bound around by adhesions. Toxine et antitoxine cholerique Ann. de Ilnstitut Pasteur 1896, X. ^ Laboratory work in bacteriology. 2 Journal of Experimental Medicine, vol. 5. (5). i-:^, O C€digestofcomments07nati
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