THE SCOYILL OUTFIT 



For PHOTOGRAPHING with the MICROSCOPE. 



Photographing with the microscope has hitherto been accomplished by 

 the aid of elaborate and costly apparatus, and been applied chiefly to 

 making illustrations for scientific magazines. The process used, that of 

 wet collodion in connection with sunlight, involved the procurement of an 

 expensive heliostat to produce a steady illumination, for with any less 

 powerful light the exposure would necessarily be so prolonged that the 

 coating of the plate would dry and become useless. Now all this is 

 changed, for with the modern improvements in photography which are the 

 result of the introduction of gelatine dry plates, the photographing of 

 microscopic objects becomes as easy of accomplishment as the photograph- 

 ing of the beautiful and visible in nature is with the popular amateur outfits. 



The scientist and microscopist, instead of spending hours in making 

 imperfect drawings, aided by the camera lucida, may in a few minutes, with 

 the assistance of photography, produce a more perfect representation of a 

 minute object than it is possible for the hand of man to do, working con- 

 jointly with the eye. Not only can an enlarged image of a microscopic 

 object be formed for illustration, but professors in colleges will find it a 

 ready means to produce negatives of a suitable size from which may be 

 made transparencies or magic lantern slides for exhibition to classes or 

 the public. 



If this is done in the daytime, a room from which all white light is ex- 

 cluded should be selected; but if used at night, as in most cases it would 

 be, the operations may all be performed in the midst of a family group for 

 their interest and amusement, and to impart to them knowledge of the mi- 

 nute life or organisms of the world which the microscope alone can reveal. 



The Scovill Photomicroscopic Equipment 



CONSISTS OF 



1 Scovill Special Half Plate Camera. 

 1 Multum in Parvo Lantern, with Double Condenser. 

 1 dozen 4^x5% size B Keystone Plates to make Negatives; also 

 1 dozen 3Kx4M size A Plates for Transparencies, 

 Price, Complete, $18.OO. 



The presumption is that you are provided with a microscope. If not, 

 we recommend the purchase of one from a regular dealer in microscopical 

 goods. 



Circular containiag directions for use sent with each outfit. 



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