Annual report of the Fruit Growers' Association of Ontario, 1898 . rtant, bat tedious, work will bs crowned with success. Thework of destroying the Brown-tail Moth has also been intrusted to the same force and isbeing carried on in connection with the Gypsy Moth work. Other work in Economic Entomology which may be referred to is the progress madeby the Division of Entomology at Washington in the accumulation of data concerningthe distribution of injurious insects in the United States. Mr. Pergande, in furtherance of his investigations of the Lecanium scales affectingthe fruit trees, spent the
Annual report of the Fruit Growers' Association of Ontario, 1898 . rtant, bat tedious, work will bs crowned with success. Thework of destroying the Brown-tail Moth has also been intrusted to the same force and isbeing carried on in connection with the Gypsy Moth work. Other work in Economic Entomology which may be referred to is the progress madeby the Division of Entomology at Washington in the accumulation of data concerningthe distribution of injurious insects in the United States. Mr. Pergande, in furtherance of his investigations of the Lecanium scales affectingthe fruit trees, spent the summer in Europe and collected large material. In the early spring, Dr. Howard visited Mexico to investigate the possibilities ofpreventing the introduction of the Morelos Orange Fruit Worm into California. Mr. R. A. Cooley, an assistant to Prof. Fernald, has beer, at work upon the genusChionaspis and has accumulated an enormous amount of material, and it is anticipatedthat his paper, when published, will give more than twice the number of species Fig. A. Operation of the first category. A compound pupa and a compound moth of P. while the economic side of the science is that which is of chief interest andimportance to the conmunity, I confess that my own interests lie rather in the directionof the purely scientific side of the subject. I^From this point of view the experiments of Mr. Henry E Crampton, Jr., of theDepartment of Zoology of Columbia University, are of surpassing ^Mr. Crampton, following up the experiments of Mr. G. Born upon frog and toadembryos, determined to try similar experiments in grafting upon Lepidoptera in the pupalperiod and has obtained some truly marvellous results Mr. Crampton selected the pupaeof the large Saturnians, Cynthia, Cecropia, Promethea and Polyphemus as being the mostsuitable, though he also experimented with success upon Vanessa Antiopa, but had nosuccess in his operations upon Danais Archippus. ENTO
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Keywords: ., bookcentury1800, bookdecade1890, bookida, booksubjectfruitculture
