A. de L. (Lisbon) writes: - For five months I have been a strict "fruitarian," and as I am obliged now to go to Mozambique (Portuguese East Africa) to remain there five rears, I should be much obliged to you if you kindly let me know what I must do to prevent the African fever and biliousness which seem to afflict all Europeans in that part of the world. Any hints you could give me as to maintaining health in such a climate would be most gratefully acknowledged.

I do not think that it is possible for any European, whether he adopts fruitarian or ordinary diet, to entirely escape malaria, since it is caused by a minute parasite which is forced into the blood by a certain form of biting mosquito.

The parasite will, however, surely gain less hold on one whose blood is clean and pure and whose vital force is strong, than on one who dissipates his strength by partaking of meat, alcohol, tea, coffee and other stimulants, or who otherwise gets his blood into a bad state by faulty diet generally.

Therefore, the thing this correspondent should do is to live as much as possible upon the simple frugal fare of the natives. He can take raw coker-nut freely and eat the fresh fruits which grow in this part of Africa. If he can obtain pineapple or papaw he will find these excellent to help him to retain his health and strength in this country.