The Arabs tell me that one dollar a day is ample for provisions for a large family at Zanzibar; the food consists of wheat, rice, flesh of goats or ox, fowls, bananas, milk, butter, sugar, eggs, mangoes, and potatoes. Ambergris is boiled in milk and sugar, and used by the Hindoos as a means of increasing blood in their systems; a small quantity is a dose; it is found along the shore of the sea at Barawa or Brava, and at Madagascar, as if the sperm whale got rid of it while alive. Lamoo or Amu is wealthy, and well supplied with everything, as grapes, peaches, wheat, cattle, camels, &c. The trade is chiefly with Madagascar: the houses are richly furnished with furniture, dishes from India, &c. At Garaganza there are hundreds of Arab traders, there too all fruits abound, and the climate is healthy, from its elevation. Why cannot we missionaries imitate these Arabs in living on heights? _24th November, 1870._--Herpes is common at the plantations in Zanzibar, but the close crowding of the houses in the town they think prevents it; the lips and mouth are affected, and constipation sets in for three days, all this is cured by going over to the mainland. Affections of the lungs are healed by residence at Bariwa or Brava, and also on the mainland. The Tafori of Halfani took my letters from Ujiji, but who the person employed is I do not know. _29th November, 1870._--_Safura_ is the name of the disease of clay or earth eating, at Zanzibar; it often affects slaves, and the clay is said to have a pleasant odour to the eaters, but it is not confined to slaves, nor do slaves eat in order to kill themselves; it is a diseased appetite, and rich men who have plenty to eat are often subject to it. The feet swell, flesh is lost, and the face looks haggard; the patient can scarcely walk for shortness of breath and weakness, and he continues eating till he dies. Here many slaves are now diseased with safura; the clay built in walls is preferred, and Manyuema women when pregnant often eat it. The cure is effected by drastic purges composed as follows: old vinegar of cocoa-trees is put into a large basin, and old slag red-hot cast into it, then "Moneyé," asafoetida, half a rupee in weight, copperas, sulph. ditto: a small glass of this, fasting morning and evening, produces vomiting and purging of black dejections, this is continued for seven days; no meat is to be eaten, but only old rice or dura and water; a fowl in course of time: no fish, butter, eggs, or beef for two years on pain of death. Mohamad's father had skill in the cure, and the above is his prescription. Safura is thus a disease _per se_; it is common in Manyuema, and makes me in a measure content to wait for my medicines; from the description, inspissated bile seems to be the agent of blocking up the gall-duct and duodenum and the clay or earth may be nature trying to clear it away: the clay appears unchanged in the stools, and in large quantity. A Banyamwezi carrier, who bore an