The Natural History Museum, South Kensington, has published an excellent
series of "economic pamphlets" at a penny apiece, describing dangerous insons and showing how they should be dealt with. The pamphlet on The House-Fly as a Danger to Health, by Mr. E. E. Austen, is a model of its kind. The house-fly, which breeds in refuse and can fly nearly a mile, is shown to be a source of peril, since it will contaminate any uncovered food with the germs of disease. We have all learned that the mosquito is a disease- carrier and must be annihilated. It is now the turn of the house- fly. Similar pamphlets deal with fleas and lice and the other insects with which our soldiers have unfortunately become too well acquainted in their dug-outs or insanitary shelters at the front. The Natural History Museum does well to employ its exports in disseminating the elementary facts of zoology in a practical and attractive form.
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