THE SCIENCE OF MICROSCOPY. 337 



In the struggle for existence the English artizan, and too often 

 his employer, suffers from a mental perversity which is fairly 

 indicated in the phrase echoed in the office and re-echoed in the 

 workshop — *' It is all very well in theory but useless in practice !"' 

 How long will the microscopist be content to discredit his ''tool" 

 by taking all that it offers for ''revelation/' and discvediit himself 

 by a too scanty preparation for intelligent use of his noble 

 instrument. 



