94 



SUMMARY OF CQltRENT KESEARCHES RELATING TO 



exhaust-protuberance of the lamp. The terminal wires from the lamp 

 are attached to binding posts which are so constructed that they Avill also 

 receive the brass pegs attached to the cord coming from the rheostat. 

 These pegs may be inserted vertically or horizontally. 



Fig. 1. 



For general observation the lower portion of the lamp is in a plane 

 with the flat face of the ol)]ective-lens, but it may be raised or lowered 

 to meet the needs of the operator. 



While the lamp-holder is clamped directly to the objective on 



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Fig. 2. 



monocular (tig. 1) and single-objective binocular microscopes when 

 16 mm. or higher power objectives are employed, a stage support (fig. 3) 

 is provided for use with low power objectives and double objective 

 binocular microscopes. Ijateral adjustment of the stage adapter centres 



