4O ENTOMOLOGICAL NEWS. [Jan., '17 



reduction. If a plate must be printed from several blocks its 

 cost is increased, for several blocks are more expensive than 

 one single block whose area is equal to the sum of the 

 several. A little careful measurement of the "copy" and cal- 

 culation will often save much time and disappointment in the 

 appearance of the published illustrations. 



Drawings can usually be reproduced in zinc, but drawings 

 with fine details and photographs require copper, which at 

 present costs twice as much as zinc. All drawings must be 

 made with jet black ink, not the common bluish writing ink 

 which will not photographically reproduce. A half-tone, which 

 is the form in which photographs are reproduced, ordinarily 

 shows the background of the photograph, hence if several pho- 

 tographs are associated side by side to form a plate and their 

 backgrounds are of different shades of color, this difference 

 shows also in the half-tone when printed and produces a dis- 

 pleasing effect. All cutting away of backgrounds or any 

 manipulation necessary to remove imperfections in the photo- 

 graph is only done at additional charge. 



Questions and. Ans^vers. 



The NEWS invites those having any entomological questions which they wish 

 answered to send such in for publication under this heading, and also invites 

 answers from its readers or others to these questions. Questions and replies 

 should be as brief as possible and the Editors reserve the right not to publish 

 any of either class which seem to them objectionable or inappropriate. Those send- 

 ing in contributions to this department will please indicate whether they wish 

 their names or merely one or more initials to appear in connection with their 

 communications, but all such must be accompanied by the full name and address 

 of the writer for the information of the editors. 



QUESTION No. 3 Green geometers usually lose much of their color 

 in the relaxing jar. Can this be avoided and how? I would like to 

 hear from Lepidopterists on the subject. G. C. 



Notes and News 



ENTOMOLOGICAL GLEANINGS FROM ALL QUARTERS 

 OF THE GLOBE. 



Psyllia buxi Linn, in New Jersey (Homop.). 



During the summer of 1916 adults of this species were taken at 

 Springfield, Rutherford, East Orange and Riverton on boxwood plants 

 growing in nurseries. The plants on which they were found were old 

 and well established, having been imported a number of years ago, so 

 there is no doubt about the species being established in New 



