372 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 10 



The manufacture of motion picture j&lms has kept pace with that of 

 equipment, and owing to the indefatigable efforts of Mr. Eastman, we 

 have film which will record anything the camera can take. To such 

 perfection has the film, and the mechanical work of the camera been 

 brought, that the taking of five hundred consecutive pictures in one 

 tenth of a second, a thing undreamed of a few years ago, is now possi- 

 ble. 



Here, then, we have the means of recording and reproducing for 

 classroom and lecture room, and for careful study, all of the muscular 

 and other movements of the vast animal and plant population of the 

 entire globe. By means of the X-ray and the microscope, in con- 

 nection with the motion picture camera, we can photograph not only 

 the external, but the internal anatomy of every living thing upon the 

 earth, in the air, or in the sea. When we stop to think of the vast 

 field of investigation, of which we are just now at the threshold, we 

 may stand in awe of the forces of nature, yet we cannot help but feel 

 a profound respect for the powers of the human mind which has 

 opened the door and let the general public get a glimpse of the inner- 

 most secrets which are so jealously guarded by old dame nature. 



The " drj'-as-dust " lecture on insect taxonomy can be enlivened now 

 and then with a few feet of film, analyzing the "buzz" of the bee's 

 wing, the "song of the katydid, or katydidn't," the "chir-r-p" of the 

 cricket, the stride of "sir" beetle, and the sailing, or soaring, of 

 "Madam Butterfly." 



The insect biologist no longer needs to cover the walls with charts 

 showing "all stages in life-history," etc., etc., or with curves, the key 

 to which has long since been lost, for by means of the motion picture 

 record he can get together a life-history stretching over months, or 

 years, and present on the screen in a few minutes, the entire trans- 

 formations for the eyes of the students, thus stimulating their interest 

 to a study of the real insect life-history much more effectively than is 

 possible with any series of dried or pickled specimens, however care- 

 fully they may be prepared. 



Museum specimens have their uses, as records, but they also have 

 their limitations, for classroom, or lecture demonstrations, besides, it 

 spoils the specimen. Lantern slides were a step in advance, but too 

 slow. The moment you introduce motion into your subject, your 

 audience is fascinated, their attention riveted, and your point of 

 instruction is driven home. 



The economic entomologist need no longer fear the bugbear of 

 classroom work, for he can now devote himself entirely to the research 

 so dear to his heart, while an assistant merrily turns the crank of the 

 Kinetiscope, or Pathescope, grinding out the pictures at the rate of 



