By the use of the moving-picture, the St. Louis Medical Society has recently shown the method of inoculating animals with disease-germs and the effect of the germs on the blood. Circulation of the blood and action of numerous species of bacilli were also illustrated. In a micro-cinematograph film showing the circulation of the blood in a living body, prepared by M. Camandon, a French scientist, and exhibited by MM. Pathe Frères, the London “Nature” states that the white corpuscles of the blood are shown gradually altering their shape and position and fulfilling one of their best-known functions in acting as scavengers and absorbing such abnormal substances as microbes, disease-cells, and granules of inert matter. “By reproducing at a slower pace the changes,” this journal continues, “the cinematograph can assist us to attain a clearer perception of the nature of the alteration as it takes place.... No amount of imagination can supply the clearness and comprehension which actual seeing can give. The cinematograph might well become a most sufficient aid to the teaching of very many biological and especially medical subjects.” [Illustration: Produced by Thomas A. Edison, Inc. SCENE FROM “THE LAND BEYOND THE SUNSET” This picture shows the fairies guiding a little newsboy to the land of his dreams.] Utilizing the moving-picture with the microscope has given the layman an insight into a world almost beyond comprehension, and yet this field particularly is only in its infancy. At the recent World’s Hygienic Congress in Washington, the large attendance at the lecture of Dr. Fullerborn of Hamburg, illustrated with microscopic moving-pictures, demonstrated the keen public interest in this subject. The pictures showed the skin of a guinea-pig being shaved, how it was inoculated with the hook-worm, the surgeon cutting out a piece of the skin and preparing his microscope. The remainder of the film showed just how the rapid multiplication of the much-talked-of hook-worm is revealed through the microscope.