1064 



SUMMABY OF CURRENT RESEARCHES RELATING TO 



Watson's Camera or Lantern Microscope. — This (fig. 237), also 

 designed by Messrs. W. Watson and Sons, is a very convenient 

 arrangement either for drawing microscopic objects, or for exhibiting 



Fig. 237. 



them to a class, as a number of students can examine the object at the 

 same time, and have its special features pointed out to them. 



It consists of a four-wick paraffin lamp in a lantern body, with 

 compound condensing lenses 4 in. in diameter. In front of the latter 



