i8 SCIENCE 



work commenced in an enquiry into the 

 crystallographic differences of certain chem- 

 ical substances, leading him to the result that 

 certain kinds of chemical fermentation are due 

 to the action of living organisms which are not 

 born spontaneously in the fermenting material 

 but are derived from infection. Lister seized 

 on this and applied it to medicine and surgery. 

 The medical statistics of the war will shew, 

 when they can be prepared, something of what 

 the world owes, measured in lives saved for 

 future work, to these two discoveries; the 

 amount of pain the sufferers have been spared 

 is immeasurable. 



Lord Moulton, in his preface to the book, 

 refers with special pleasure to Dr Rosenhain's 

 essay on Modern Metallurgy. The foundation 

 of this work rests on Sorby's application of the 

 methods of petrographic research to investi- 

 gate the properties of meteorites, and on the 



