232 INTRODUCTION TO SCIENCE 



can scarcely be over-estimated, and the further 

 development of which by Monge had far-reach- 

 ing effects upon mathematical science itself. 

 Here we have a new and distinct branch of 

 science springing directly from the occupation 

 of war, on its engineering side." 



ILLUSTRATIONS or THE PRACTICAL UTILITY 

 OF THE SCIENCES. The long list of what are 

 called "Applied Sciences" a term which Huxley 

 hated so heartily shows the number and the 

 variety of the practical utilizations of Science. 

 We cannot give more than a few examples, 

 which may be multiplied by reference to other 

 scientific volumes, in this Library. Thus while 

 every one knows more or less clearly that astron- 

 omy still continues to be of use in navigation, we 

 find in Mr. Hinks's fascinating volume that the 

 science also earns its living by helping the sur- 

 veyor and the map-maker, and by supplying the 

 world with accurate time. Even to ships upon 

 the sea the astronomers now tell the time of day 

 by wireless telegraphy. 



Numerous chemical arts such as brewing, 

 soap-making and dyeing were practised before 

 there was a science of chemistry, but the multi- 

 plication of these under direct scientific stimulus 

 is past telling. Think only, for instance, of the 

 cyanide processes for the recovery of gold from 

 its ores, of the technical development of ben- 



