VIII TAHLK OF CONTKNTS. 



I 'age 



properties — Susceptibility of dificrent sheep — Natural, inocu- 

 lated, distinct, and confluent sheep-pox — Incubation — Papu- 

 lation — Vesication — Suppuration — Ulceration — Desquama- 

 tion — Duration of the stages — Constitutional symptoms — 

 Time of greatest danger — Pcr-centagc of deaths — Post- 

 mortem appearances — Prophylactic measures — Medical and 

 hygienic treatment 60-98 



CHAPTER V. 



Small-pox inoculation — Its introduction into England — Increased 

 fatalitv of variola — Ovination or inoculation of shcej) — Bene- 

 ficial effects of the operation — Experiments — Confluent sheep- 

 pox following ovination — Preparatory treatment — Method of 

 operating — Experiment with punctures and scratches — Local 

 symptoms of inoculation — Time to take the lymph — Inocu- 

 lated and eruptive vesicles — Experiments — Primary lymph, 

 and means to improve it — Ovination with lymph of the fourth 

 remove — Experiment of inoculating and exposing to conta- 

 gion simultaneously — Secondary eruptions — Protection afford- 

 ed by ovination — Subsequent management of the animals — 

 Hurtrel D'Arboval's remarks on gangrenous tumours ... 99-133 



CHAPTER VI 



Origin of vaccination — Advantages of the system — Opinions of 

 Continental authors on the vaccination of sheep — Hurtrel 

 D'Arboval's experiments — Sacco's advocacy of vaccination — 

 Experiments of ovinating sheep after vaccination — Analogy 

 between variola and sheep-pox — Variolation and subsequent 

 ovination — Substitution of ovine for vaccine lymph — Messrs. 

 Ceely and Marson's experiments — Inoculation of oxen with 

 ichor of sheep-pox — Experiments — Conclusion 134-157 



