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described from a single female specimen in bad condition. 

 Mr. Blandford explained the system of labelling types in the 

 Brussels Museum. Dr. Sharp, Prof. Meldola, Mr. McLaclilan, 

 and Prof. Poulton continued the discussion. 



Mr. Blandford exhibited a series of lantern slides showing 

 the uses to which photography could be put in entomological 

 illustration. The photographs shown included various 

 Satuniiiihc, Tanesmhv, species of Maiiustra, Tipula, Ophion, 

 Carahiis, TAicaims, Sit07U's, etc., as well as one or two 

 examples of insect-injury, and a view in Windsor Park 

 showing oaks defoliated by Turtn'.v ririchina. Mr. Blandford 

 said that the photographs were taken without any consider- 

 able practice in photography ; that good and well-set 

 specimens were desirable for reproduction ; the colour-values 

 had to be arrived at by the careful use of orthochromatic 

 methods, and a large lens of good focal length should be 

 used. Careful attention had to be paid to the lighting of the 

 objects, a point in which entomological experience was of 

 great value. The shadows cast by the insects were ob- 

 jectionable and could not satisfactorily be "blocked out." 

 He said that they could, however, be done away with by a 

 method used for some time by himself, and recently described 

 in an American journal. The insects were pinned on to 

 small blocks of cork stuck on a sheet of ground glass, 

 which was illuminated from behind by white or grey paper. 

 Some experiments, which unfortunately had to be 

 abandoned, with a specially constructed lens, showed that 

 it might be possible to obtain satisfactory photographs of 

 such small insects as Sitones or Apion with an amplification 

 of two to five diameters. Prints could be made from the 

 negatives by photo-mechanical methods, but a large number 

 of the illustrations that have been thus published were of no 

 value owing to the inferiority of the process adopted. 

 Owing to the expense, and still more, the difficulty of 

 obtaining good illustrations of insects, photography deserved 

 more attention than it had yet received. 



Prof. Meldola expressed surprise that photography had 

 hitherto been so little employed in the illustration of works 

 on Entomology. 



