. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. t admit of solutionwith sufficient freedom for ready use. Another objec-tion exists in the fact that, in the hands of unscrupulousvaccine-propagators, the use of mucilage would be sug-gestive of a ready method of substitution in cases of adearth of genuine lymph. Evidence was not wanting inone of the recent American epidemics of small-pox thatsuch substitution was actually practised. Ivory vaccinepoints are adapted to use in connection with the methodby scarifica
. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. t admit of solutionwith sufficient freedom for ready use. Another objec-tion exists in the fact that, in the hands of unscrupulousvaccine-propagators, the use of mucilage would be sug-gestive of a ready method of substitution in cases of adearth of genuine lymph. Evidence was not wanting inone of the recent American epidemics of small-pox thatsuch substitution was actually practised. Ivory vaccinepoints are adapted to use in connection with the methodby scarification, rather than by puncture. As ordinarilyprepared, the lymph upon ivory points will usually retainits activity, when the points are kept at an even, cooltemperature of 40° to 60°F. (4° to 15°C), for a month ormore. (It is customary to warrant them for a period ofthree weeks.) They have been known, however, fre-quently to retain their activity for very much longer pe-riods, ten months or more having been reported. A very ingenious and convenient contrivance has beendevised, or brought to notice, by Dr. F. Kimball, of An-. FlG. 4450.—Kimballs Device for the Rapid Collection of Lymph. dover, Mass., for the purpose of facilitating the rapidcollection of lymph upon points when considerable quan-tities are required at once. This device consists of twothin pieces of pine wood glued together, of the followingshape and dimensions. Length, 31 ctm. ; width of onepiece, 2«tm.; of the other piece, ctm.; thickness ofboth pieces when glued together, 7 mm. From one ofthese pieces a thin shaving of a uniform width of a littlemore than one centimetre is removed before gluing themtogether. The shaving should be a little thinner than thepoints which are used, and should be planed off with great care. By this means a crevice or slit of uniform depth isleft which will hold the points quite firmly when the piecesof wood are glued together. It will be noticed that thepieces of wood are
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmedicine, bookyear188
