698 



SUMMARY OF CTJHRENT RESEARCHES RELATING TO 



into its case (fig. 121) the stage is turned upwards on a cradle joint 

 against the limb, the two legs, which move with it, then being also 

 parallel with the limb. On closing together the legs (which turn on 

 pivots fixed underneath the stage) and sliding the body-tube down, 

 the instrument is reduced to 11^ in. by 3 in. by 2^ in. A milled 

 head behind the stage secures it if desired. 



The instrument can be used in a vertical position by bringing 

 forward the legs on their hinge joints, so that they project in front 

 of the stage and mirror. 



Chevallier's Inclining Microscope Garge model). — We give a 

 figure of this somewhat peculiar Microscope (fig. 122) in illustration 



Fig. 122 



of one of the various designs adopted in the evolution of the modern 

 instrument. The base is solid, and forms one piece with the upright. 

 The limb is suspended in a peculiar manner, being attached to a 

 trunnion axis very near the lower end — much too near to give stability 

 to the inclination. The coarse adjustment is by sliding-tube. The 



