1851 Great Exhibition: Official Catalogue: Class X.: John Badcock
From Graces Guide
732. BADCOCK, JOHN, Brighton.
Photographic specimens of vaccine, produced by inoculating the cow with small-pox, showing the character of the vesicles in their different stages. The specimens, furnished by Mr. Constable of Brighton, show the genuine vaccine vesicle and its characteristic areola as described by Dr. Jenner.
[The production of vaccine virus is a subject of much importance. The exhibitor states that he has proved the efficiency of virus thus obtained, and suggests that by proceeding in the manner described, a supply of virus may be procured without the loss of time caused by sending, in some instances, many thousand miles for vaccine.]
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