492 POPULAR LECTURES AND ADDRESSES. 



and present satisfaction and pleasure, notwith- 

 standing the difficulties and disappointments 

 contended with. But I am afraid I am taxing 

 your patience too much. I will only just say with 

 reference to physical laboratories that they are 

 now advancing to something of the method and 

 consistent system that Thomas Thomson and 

 Liebig so greatly gave to chemical laboratories. 

 I, myself, have not done so much as I might have 

 done in that way. The physical laboratory at 

 Glasgow has, I believe, been, more than most 

 others, devoted to whatever work occurred in 

 physical investigation, measuring properties of 

 matter, comparing thermometers, electrometers, 

 galvanometers, and doing other practically useful 

 work. We put the junior students at once into 

 investigations, and let them measure and weigh 

 whatever requires measurement and weighing in 

 the course of the investigation. I look with 

 admiration to what has been done by those who 

 have worked up physical laboratories to their 

 present advanced condition. The physical labora- 

 tories of King's College and University College, 



