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SUMMARY OF CURRENT RESEARCHES RELATING TO 



thrown on the screen 16 feet long, and every hair distinctly defined, and 

 nearly as brilliantly as a picture shown by the Pamphengos lantern. 

 The proboscis of the blow-fly can, with various powers, be projected 

 from 8 to 16 feet long, and all the details of an insect's eye in section 

 can be shown most perfectly ; the circulation of the blood in the foot of 

 a frog is easily displayed, and the wonders of pond life made manifest 

 without the slightest difficulty or trouble. With the electric light no 

 limit can be put on the magnifying power of the instrument, although, 

 for all ordinary purposes, the lime light is all that is needed to obtain 

 the results above mentioned. Every precaution has been taken to arrest 

 the passage of heat to the objects by means of non-conductors, and the 

 results obtained have met with the approval of all those who have seen 

 its perfect performances. 



" This Microscope can be fitted to any good optical lantern, but it is 

 preferable to purchase the instrument in its entirety, as above illustrated. 

 The lantern and Microscope are firmly attached to a solid base-board, 

 rendering any interference with the adjustment unnecessary, an arrange- 

 ment which will be found invaluable for perfect manipulation. Any 

 ordinary microscopic objective may be used, but it is advisable to adopt 

 those . . . which are specially corrected to insure the largest amount 

 of light, and give a very flat and sharply defined image on the screen." 



Hughes' Improved Iflicroscopic Attachment— Cheap Form. — Mr. W. 



C. Hughes has devised this form of Microscope (fig. 7) for use with the 

 ordinary magic lantern in place of the front lens, and claims that it will 



Fjg. 7. 



show ordinary microscopical slides on the screen for class or demonstrat- 

 ing purposes far more brilliantly and better defined than the old form of 

 cheap lantern microscopic attachment. It will show chemical, anatomical, 

 and other objects on a disc 8 to 10 feet when limelight is used, and with 

 the "Pamphengos" lantern very excellent results can be obtained. 

 *' With a 1/2-in. the spiral formation of a blow-fly's tongue can be 

 shown, the sheep tick, 6 ft. long, exceedingly sharp and well defined, 

 sections of wood, spiders, flies, scorpions, and each hair on a flea or other 

 small insect is brought out with great distinctness. Pond life is easily 

 demonstrated, Volvox glohator, showing young inside, and Hydra, 6 ft. to 

 7 ft. long. It has a movable substage condenser which enables it to be 

 used with different object-glasses, new form of spring on the stage, by 



