[October, 
546 Analyses of Books . 
adapted to an equatorial in contradistinction to a merely tropical 
climate, and consequently suitable for introduction into Sierra 
Leone, the Gold Coast, and similar regions. Are there any spe- 
cies of Eucalyptus indigenous in New Guinea ? If so, they will 
probably meet the emergency. 
As regards the origin of the “ zymotic ” diseases, Mr. Kingzett 
does not accept the “ germ theory,” against which he, following 
Dr. Drysdale, advances arguments which cannot be ignored. 
Believers in ozone will derive little edification from this work. 
They will learn— what is utterly beyond dispute — that most of 
the observations made as to the presence or absence of this agent 
are inconclusive, and that the commonly received notion that 
zymotic disease prevails inversely as its proportion in the atmo- 
sphere is simply baseless. 
Mr. Kingzetf s book may be read with great advantage, and 
will do good service in enlightening the public mind on many 
points conne&ed with health and its preservation. An index 
would have been useful. 
The Truth about Vaccination . An Examination and Refutation 
of the Assertions of the Anti-Vaccinators. By Ernest 
Hart* London : Smith, Elder, and Co. 
The Anti-vaccination movement is being carried on with a zeal 
and a pertinacity which, even in these days of professional agi- 
tation, must be pronounced surprising. We cannot help won- 
dering where the promoters of the outcry — none of whom are 
known to us even by name — find the two essential requisites, 
dupes and funds. That money is forthcoming is evident, from 
the quantity of documents, pamphlets, and advertisements which 
the anti-vaccinators issue in support of their views, and which, 
if feeble in argument, are remarkably strong in assertion. 
On Sunday, July 25th, emissaries were posted near the doors 
of a number of places of worship in the north of London, and 
tradts denouncing vaccination were handed to the congregations 
on leaving. We are bound to say that, to our knowledge at 
least, this proceeding did not in any way receive the countenance 
of the clergy and ministers. Surely, when such means are 
resorted to, it is incumbent upon the intelligent part of the 
community not to rely upon the inherent absurdity of the move- 
ment, nor to hope that if left alone it will die a natural death. 
Disease-germs, moral and social as well as physical, show a 
wonderful vitality. So long as an ignorant and excitable com- 
munity coexists with eloquent sophists who can gain fame, 
power, and perhaps more tangible rewards, by organising 
