100 ARRANGEMENT OF APPARATUS, ETC. 



XIII. Result, completely successful, or over or un- 

 der-exposed as case may be, in this case very 

 much over-exposed. 



It will be seen from the foregoing notes the neces- 

 sity for having the laths at the side, marked off in 

 inches and half inches. 



We now proceed to photograph with the one inch 

 objective. The object is supposed to be mounted in 

 fluid, as an illustration of the method to be adopted 

 under these circumstances. 



The microscope being placed on the platform, the 

 divisions, nos. 1 and 2, of the stand are rigidly fas- 

 tened together, by tightly screwing down the board 

 fitting on the bolts projecting from their sides. 



They are then raised till at right angles to no. 3. 

 The camera legs are fastened to the end bolt on 

 no. 1, their pointed extremities resting on the 

 ground, maintain this end of the stand in the per- 

 pendicular position. 



The horizontal position of the stage is ascertained 

 by a spirit level. 



The tube containing the eyepiece, if not previously 

 attached to the microscope, is now put on ; the ob- 

 jective we wish to use, in this case the one inch, is 

 adapted. 



The substage apparatus, with its condenser and pin 

 hole cap, is fixed in position. 



The lamp previously trimmed and lighted, is 

 placed on no. 3 division of the stand, about ten or 

 twelve inches from the mirror below the condenser. 



