December, '21] 



PHILLIPS &• poos: lamp for microscope 



505 



current. Professor A. L. Alelander,' in 1913, briefly described an adapta- 

 tion of an automobile headlight which he used for microscopic work. 

 However the ad\'antages of this t\-pe of lamp apparently have not been 

 discovered by most taxonomic workers. It was therefore deemed 

 advisable to give a detailed description of the lamp in use by the writers, 

 together with a mounting which has been found m.ost convenient and 

 useful at this laboratory-. 



The lam.p (Fig. 12.) adopted for use by the writers consists of the or- 

 dinary Ford spot light which is adjustable in both horizontal and vertical 

 planes and carries a 6 — 8 volt, 32 candle-power bulb. It is mounted 



Fig. 12. Diagram of lamp installation. 



on a home-made stand consisting of a fifteen inch length of one half 

 inch, iron pipe with an elbow attached to the end which is mounted 



ijour. of N. Y. Ent. Soc. Vol. 21, 1913. p.227. 



