ENTOMOLOGY

~o SANITARY ENTOMOLOGYlems of municipalities, communities, and armies, as well as household andcommercial problems. Municipal entomology has already been recognizedin a small way by certain cities. It will become better known only bythe work of entomologists themselves who are men of vision. The problemsinvolved in entomology sanitation demand ali intensive and specializedtraining which few of us received in school. If we would fitourselves for such work it will demand great ,effort on our part.CLASSIFICATION: OF METHODS BY WHICH INSECTS GAN CARRY ORCAUSE DISEASELong before anyone knew of causative organisms in medicine it wasrecognized that insects might be productive of disease. We may thereforeassume as our first category the diseases actually caused by theinsects themselves.(r.) Diseases caused directly by insects.-We must recognize, forthe sake of arrangement, all pathological conditions brought about byinsects whether of 8: serious nature or not.1. Entomoplwbia.-The fear of insects, both harmless and harmful,is a common ailment, amounting in many people to an obsession. I knowof a young lady who became so frantic over the presence of a huge dragonfly in the automobile that the attempt to catch it led to a seriousaccident. Recently a serious automobile accident was caused by a beesting. Many women become frantic at sight of large insects, and Ihave even seen men lose all sense of courage in the presence of anunknown species of insect. Obviously only patient and tactful educationcan ever cure such an obsession.~. A'TIInoyance and worry.-We have all probably experienced asense of annoyance, amounting sometimes to worry, from insects. Itfrequently ·happens that the annoyance increases to the point of causingacute nervous troubles which, it is quite conceivable, might lead toinsanity with certain people. Animals arc frequently driven frantic byinsects such as buffalo gnats, mosquitoes, and horse flies, and lose allcontrol of themselves. We may classify these different ~ases of insectannoyance in accordance with the sense which perceives it and communicatesits .sensations to the brain. In this manner we have annoyanceoriginating through sight, memory and imagination, sound, smell, taste,and feeling.Sight worry is initiated by the occurrence of unwanted insects inhome or garden, or on one's person, or by their constant swarmingabout until patience is exhausted and one loses control of the nerves.A recently recorded case tells of a lady whose house was badly infestedwith book lice and who was fast becoming a nervous wreck when