Anchylostoma Duodenale *Read at the Indian Medical Congress, December 1894.

over moist, somewhat uneven ground, favouring the accumulation of water here and there, soon lead to profuse development of larvse. These favourable circumstances are found whenever latrines are absent. The excrementa lie scattered in large masses near human dwellings, especially in swampy soil frequently trampled on by men and animals, without any outflow of water. This is the peculiar home of the worm. These conditions are often to be met with in Brazil and other countries where cultivation is in a backward condition and where men and domestic animals are often crowded together within narrow limits.f In the outskirts of small country towns, these conditions are also to be met with, but to a smaller extent, as here latrines, although of a primitive form, are met with ; conditions of this kind are still less