96 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



instrument with drawn-out tul>e, after adjustment of nose-piece and 

 objective, is about 3G cm. ; the diameter of the test tube is 32 mm. 



Fig. 9. 



DiECK, W. — Das Photomikroskop fiir ultraviolette Strahlen und seine Bedeutung 

 fiir die Mstologische Untersuchung, insbesondere de Hartgewebe. 



SB. Ges. Natiir. Frcunde, Berlin, 1906. 



Sabine, W. C. — The Optical Advantages of the Ultra-violet Microscope. 



Jonrn. of Med. Research, xiv. (1906) p. 455, 



