WITH THE MICROSCOPE. 339 



if subordinate, enquiry by many of those who profess to discuss 

 physiological questions philosophically. Some seem to think that 

 considerations about demonstrating anatomical details are beneath 

 the notice of those who aspire to what they themselves call philo- 

 sophical views. If it were possible that truth could be evolved out 

 of a man's understanding, it would be absurd to spend time in making 

 observations which may after all often turn out to be fallacious ; but 

 is not such a notion opposed to all experience? and is it not certain 

 that real progress in many departments of philosophical enquiry is 

 dependent upon improvement in our methods of working? 



Z 2 



