Small-pox in London, 32. mortality in London, 33. in England during registration, 39. in Scotland and Ireland, 40. on the Continent, 44. in Sweden after vaccination, 45. mortality not reduced by vaccination, 47. in Prussia, 48. in Bavaria, 49. in seaports, 52. and zymotics follow same laws, 53. in Leicester, 55. in Leicester and Birmingham, 58. in German army, statistics unreliable, 73. no immunity against second attack, 76. liability to, increased by vaccination, 78. and overcrowding, 78. in Sweden, Prussia, and Bavaria, 86. in Leicester, a test case, 87. in army and navy, a crucial test, 88. Squirrel, Dr., on injury and death after vaccination, 1805, 10. Statistics alone can show value of vaccination, 23. of vaccinated and unvaccinated worthless, 25. Scientific treatment of, 31. Stockholm, first vaccination in 1810, 46. Summary of argument, 80. Sweden, vaccination and small-pox in, 45. shows uselessness of vaccination, 48. T. Tebb, Mr. W., on 535 cases of small-pox, after vaccination before 1810, 11. U. Unvaccinated a different class from the vaccinated, 29. evidence as to, not trusted in Germany (note), 29. V. Vaccinated and unvaccinated, how determined by doctors, 25. persons wrongly registered, 26. and unvaccinated death-rates of, as given by doctors, 27. and unvaccinated death-rates of, as given by doctors in last century, 28. and unvaccinated, how they differ, 70. Vaccination, early history of, 6. injury and death from, 10. and the medical profession, 12. doctors not best judges, 13. deaths caused by, 17. illness and death from, 19. estimated deaths from, 19. official evidence of, not trustworthy, 21. a dreadful case of death from, 21. how it affects the poor, 22. evidence for, often worthless, 23. can only be proved useful by statistics, 23. marks not permanent, 26. marks hidden by eruption, 26. proved useless by modern hospital statistics, 30. in England 1872-95, 40. on the Continent, 44. in Stockholm from 1810, 46. in Stockholm not especially deficient, 47. false assertions as to value of, 50. uselessness of, proved, 51. and small-pox in Leicester, 55. and infant mortality in Leicester, 56. injuries from increase death-rate, 57. disasters at Shorncliffe camp concealed, 73. increases liability to small-pox, 78. Vacher, Dr., on registration of vaccinated and unvaccinated, 25. Variolous test, fallacy of, 7, 9. Vogt, Prof. A., on vaccination increasing small-pox, 51. no immunity from a previous attack of small-pox, 76. W. Warrington and Leicester small-pox, 59. Whooping-cough in London, 37. Z. Zymotic diseases in London, 36. in Leicester, 55. Zymotics in bills of mortality, 33. [Illustration: DIAGRAM I.