A manual of animal vaccination : preceded by considerations on vaccination in general / by E. Warlomont ; translated and edited by Arthur J. Harries.

  • Warlomont, Evariste, 1820-1891.
Date:
1885
Catalogue details

Licence: Public Domain Mark

Credit: A manual of animal vaccination : preceded by considerations on vaccination in general / by E. Warlomont ; translated and edited by Arthur J. Harries. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    4<3 VARIATIONS OF TRUE VESICLES. is it mixed up with the tissues, but it is never completely effaced.” It is not always necessary that all true vaccine-vesicles should correspond to every detail of this description, even in the most healthy children. We have seen the typical vesicle present itself on the seventh or eighth day, in the form of a white turban, surrounded by a red areola, causing an elevation bounded by hard and glistening margins. It is not always thus. Sometimes the areola is completely absent; sometimes even it is the elevation that is lacking; the tumour seems to be developed internally more than externally; the turban is replaced by a whitish mother-of-pearl zone, always surrounded then by an inflammatory areola, but making no elevation appreciable to the passage over it of the finger; the latter, on pressure, perceives only a sen- sation of induration, more or less deep. At other times, again, the vesicle, in the child, presents the same characters as those which are most frequently found in the adult, whose skin is less delicate and less pliable. It is less flat, less umbilicated; it has neither the same regularity of form nor the same brilliance; the elevation is less clean, the edge less decided; the areola less vivid, less intense. In a word, it offers, in all its external characters, something undecided, more easy to feel than to describe, and which assimilates it, in some respects, to what is called “ false vaccine.” In spite of these varieties of form, the vaccine enclosed in these vesicles, if the child be of a good stock and has received good lymph, may be used to inoculate others, with the same success as happens with that which comes from typical vesicles. If, however, the latter deserve the preference, it is because in them the lymph is more
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