37 
Once more he returned to Scotland and continued the injections, 
his health keeping satisfactory in every respect. Early in 
1907 he again came up to London. Again his blood was 
carefully examined with negative result. A monkey injected 
with the blood failed to develop trypanosomiasis. It was not 
considered prudent to allow him to return to Uganda, but he was 
encouraged to seek employment elsewhere, and when an appointment 
offered in the West Indies he left England in the early spring of 
1907. On the voyage out he was shipwrecked, and during eleven 
days suffered great hardships, wandering about the mangrove swamps 
at the mouth of the Magdalena river. Nevertheless he kept in 
perfect health, and when I saw him on his return on 19th April, 1907, 
he appeared healthy and robust, without trypanosomes in his blood 
and with no sign of trypanosomiasis about him. As he had lost his 
syringe and atoxyl when shipwrecked, he had had no injections for 
many weeks. 
Subsequently he again set out for the West Indies, and when last 
heard of was still in perfect health. 
V. — J. M., a botanist and agricultural expert, was in British 
Central Africa from June, 1897, to September, 1899. I examined 
and passed him for service in Uganda in March, 1901. He was then 
30 years of age and in good health. 
He arrived in Uganda on June 17th, 1901. He informed me that 
before crossing the lake he had several small fevers (probably 
malarial) at Kusumu. He also informed me that a fortnight after 
his arrival in Etebbe he was bitten by ‘ something ’ in front of his 
left ankle; the part swelled and he had fever about the same time. 
With this exception he kept well for a year. About June, 1902, he 
began to ail — languor, loss of appetite. At Christmas of that year, 
and on and off till March of 1903, he had several heavy fevers, 
accompanied by cerebral symptoms. He became melancholic, had 
delusions of persecution, and at one time was suicidal. Trypanosomes 
were found in his blood and he was invalided home. 
I saw him on August 1st, 1903. He had no fever then, and 
looked fairly healthy, but his manner was strange and there were 
definite trypanosoma erythema patches on his trunk and I found 
trypanosomes in his blood. 
I saw him subsequently from time to time. Occasionally he had 
