Bauhaus-Universität Weimar

Titel:
The Sciopticon Manual, Explaining Lantern Projections in General and the Sciopticon Apparatus in Particular Including Magic Lantern Attachments, Experiments, Novelties, Colored and Photo-Transparencies, Mechanical Movements, etc.
Person:
Marcy, L. J.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit39449/182/
190 
S CIO P TI C O N MANUAL. 
and a high power consequently in use, the source of 
light should be drawn farther from the condensing lenses- 
A very interesting addition to the microscope consists 
of a diagonal mirror, whereby the image of the objects, 
instead of being projected directly on an opaque screen, 
may be thrown down at right angles on a sheet of paper 
placed on a table, and a drawing very conveniently 
made. 
Holman’s Siphon Slide (Fig. 53) allows the passage 
of a continuous current of water for the purpose of 
keeping it cool in the focus of light. It is designed 
Fig. 53. 
for showing the circulation of the blood in a tadpole’s 
tail, of the sap in plants, &c. Its price, without the 
bottles, is $5.00. 
A tank filled with a solution of alum is sometimes 
used to absorb much of the heat of a beam of light 
before it falls upon a delicate microscopic object.
        

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