ZOOLOGY AND HOrANY, MICROSCOPY, ETC. 



l^Ul 



(3) Illuminating- and other Apparatus. 



Bausch and Lomb's Projection Lanterns.*— Messrs. Baiisch cUid 

 Lomb manufacture several forms of the projection lantern, and apply 



to them the trade name of " balopticon'' The ^^^«^^\ ^XrhthJst 

 figs. lB-18 is Usted as their " Convertible " balopticon, and is then highest 



* Special Illustrated Catalogue, Projection Apparatus, Rochester, N.Y. (1911 

 66 pp. 



April 16th, 1913 ^ 



