1892.] THE MICKOSCOPE. 237 



A Cheap Microscope Lamp. 



By W. D. GRIER, 



BOSTON, MASS. 



During the past few years I have seen in the journals directions 

 for making ahnost everything, from a dissecting microscope to a 

 slide-box, but no one has yet suggested a home-made lamp. Un- 

 fortunately " illuminators " are expensive luxuries, and the follow- 

 ing description of one which I rigged up in a moment of inspira- 

 tion may be of use to some whose desires are, like my own, very 

 much larger than their pocket-books. The component parts and 

 their prices are as follows : 



A small kerosene lamp with a flat wick 75 



A two-ring retort stand 65 



A " tube clamp," No. 5959 of Eimer & Amend's " Prices 



Current" 50 



A piece of ground glass, 4x5 ; ditto of white card-board ; ^ 



dito of sheet brass, lead or tin, 5x7 ; iS inches of 1-16 [- .35 

 brass wire ) 



Total $3.15 



Trent "Vituj SidtVitw 



Via. f. 



EXPLANATION OF PLATE. 



a. Frame of ground glass. 

 h. Card reflector. 



c. Wire support for reflector. 



d. Clamp. 



Cut the sheet metal like fig. i, place the ground glass on it and 

 bend the ears a over to hold it in place ; bend the long piece b as 

 in fig. 3. 



Put the lamp on the large ring of the stand and lower the small 

 ring over it, clamping it firmly at any desired height. Clamp 

 the ground glass in place with its centre in line with the flame, 

 bend the brass wire as in fig. 3, slip the helix c over the upright 



