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4. Vaccination


6. Memorial of Josiah Meigs, and others, for an act of incorporation of a national vaccine institution for the United States of America: January 5, 1820 : read, and referred to a select committee


10. A treatise on cow-pox: in which the existence of small-pox, or varioloid in any form, subsequent to vaccination, is shown to arise from some imperfection in its performance, and not the result of inefficacy on the part of the vaccina to shield the system entirely from these diseases