574 
INTRODUCING VACCINATION. 
enormous that I ventured to apply to Government for a 
supply of vaccine virus to meet me on my return — by one 
portion being sent in the Governor’s mail-bag to the Cape, 
and another portion by way of Bombay — all convenient 
haste being enjoined. Many intelligent Arabs have ex- 
pressed to me their willingness to use it. If I remember 
rightly, Lady Mary W. Montagu brought the knowledge 
of innooulation from Turkey. This race, though bigoted, 
perhaps more than the Turks, may receive the superior 
remedy; and, if they do, a great boon will be conferred, 
for very many thousands perish annually and know no 
preventive. The reason for my troubling you is, I do not 
know any of the conductors of vaccination iu London, and 
Professor Christison, of Edinburgh, who formerly put up 
the virus in capillary tubes, may not now be alive. The 
capillary tubes are the only means of preserving the sub- 
stance fresh in this climate I have seen, and if your Lord- 
ship will kindly submit my request to vaccinators to send 
these tubes charged with matter 1 shall be able at least to 
make an effort to benefit this great population. 
D. L 
Dr. Livingstone to Earl Granville. 
Unyanyembe, near the Kazch of Speke, 
Feb. 20th, 1872. 
My Lord : — My letters to and from the coast have been 
so frequently destroyed by those whose interest and cupi. 
dity lead them to hate correspondence as likely to expose 
their slaving, that I had nearly lost all heart to write, but 
being assured that this packet will bo taken safe home by 
Mr. Stanley, I add a fifth letter to four already penned, the 
pleasure of believing that this will really come into your 
Lordship’s hands overpowering the consciousness of having 
been much too prolix. 
The subject to which I beg to draw your attention is the 
part which the Banians of Zanzibar, who are protected 
British subjects, play in carrying on the slave-trade in 
