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              An Estimate of the True Value of Vaccination
                    as a Security Against Small Pox

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                                   AN
                               ESTIMATE,
                               _&c. &c._




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 Newcastle; Printed by T. & J. Hodgson,
            Union Street




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                                   AN

                                ESTIMATE

                          OF THE TRUE VALUE OF

                               VACCINATION

                                  AS A

                       SECURITY AGAINST SMALL POX.


                                   BY

                             T. M. GREENHOW,

           MEMBER OF THE ROYAL COLLEGE OF SURGEONS IN LONDON;
            SURGEON TO THE LYING-IN HOSPITAL, TO THE CHARITY
                     FOR POOR MARRIED WOMEN LYING IN
                     AT THEIR OWN HOUSES, AND TO THE
                        INFIRMARY FOR DISEASES OF
                           THE EYE, NEWCASTLE.


 “And in order to stimulate the wise and good to aim strenuously at this
 consummation (the total extirpation of Small Pox), let it be constantly
 borne in mind, that the adversary they are contending with is the
 greatest scourge that has ever afflicted humanity. That it is so, all
 history, civil and medical, proclaims; for though the term Plague
 carries a sound of greater horror and dismay, we should probably be
 within the truth, if we were to assert, that Small Pox has destroyed a
 hundred for every one that has perished by the Plague.”

                                                    _Sir Gilbert Blane._


                                 LONDON:

               PRINTED FOR BALDWIN, CRADOCK, AND JOY; AND
                      EMERSON CHARNLEY, NEWCASTLE.

                                  1825.

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                                Preface.


 My design, in