THE YOUNG NATURALIST. 



13 



the stronger the light the less time the sensitive plate will need to be exposed 

 to its rays) thrown on to the slide on which is mounted the object to be 

 photographed, this can be done directly, or indirectly, that is, the light may- 

 be thrown direct on to the object on the slide, or first on to a mirror and then 

 by the reflective powers of the mirror thown on to the slide. I find by put- 

 ting a strong condenser between the lamp and the slide (that if the light is 

 thrown on directly) it greatly improves the light and consequently lessens the 

 exposure of the plate. 



Having now got your camera and microscope connected together and the 

 slide well lighted, the next operation is the focusing or the making of the 

 object to be photographed clear to the naked eye. This can only be accom- 

 plished by turning the screw of the microscope and not that of the camera, 

 which only enlarges the disk of light and object without focusing it. 



After focusing the object clearly, the student has only to put in his sensitive 

 plate and produce his photo — but how to take a photograph can be learned 

 from any book on photography of which there are enough to stock a small 

 library. I think I may safely leave the student now, to pursue his study of 

 insect photography alone. 



Castle House, Shooters Hill, Kent. 



REPORTS OF SOCIETIES. 



ENTOMOLOGICAL SOCIETY OE LONDON. 



December 7th, 1887. — Dr. David Sharp, E.Z.S., President, in the chair. 



Mr. C. E. Stanley-Phillips, of Shooter's Hill ; Mr. H. W. Barker, of Peck- 

 ham; and Herr E. G. Honrath, of Berlin, were elected Eellows. 



Mr. Jenner Weir exhibited, and made remarks on, twelve specimens of Cica- 

 detta hamatoides, collected last summer in the New Forest, by Mr. Charles 

 Gulliver. Only one of the specimens was a male, from which it was inferred 

 that the males were more active than the females, and quickly retreated when 

 disturbed. 



Mr. M'Lachlan exhibited a specimen of Pterostichus madidus, I 1 ., which 

 he had recently found in a potato. It seemed questionable whether the 

 beetle had been bred in the cavity or had entered it for predaceous purposes. 

 Mr. Theodore Wood, Mr. Kirby, and Mr. Herbert Cox took part in the dis- 

 cussion which ensued. Mr. M'Lachlan also exhibited two specimens of a 

 species of Trichoptera — Neuronia clathraia, Kol. — whieh occurred rarely in 

 Burnt Wood, Staffordshire, and elsewhere in the Midlands. On enquiry he 

 was informed that the two specimens exhibited had been found in the Totten- 

 i Marshes, by Mr. C. J. Boden. 



