( 3-1 ) APPENDIX YI.

PiEPORT on tlie Water from the Hot Spring, Busi, Central Africa, about 4° 54' 00" N. ; 30° 51' 00" E.

[Copy.] " University College Hospital, London, W.C.

"October 17, 1881. " Dear Sir, " I send you the analysis of the African Water, and trust it will meet your requirements. It is especially remarkable by reason of the large amount of Carhonate of Soda it contains, which would render it of service in rheumatism and stomach disorders.

"The presence of sulphuretted hydrogen makes it valuable as an alterative in skin diseases and glandular affections.

" I am, dear Sir, yours sincerely, " A. W. Gerrard. " To R. W. Felkin, Ejq."

[Copy.] " Universitv College Hospital, London, W.C.

''October 17, 1881.

" Report on the Constituents of a Water from a Thermal Spring, forwarded to me by R. W. Felkin, Esq.

Specific Gravity 1-04:2 Total solids in 1000 parts 3-150 *Sulphur in 1000 parts—in combination) as sulphuretted hydrogen f Soda abundant, as a carbonate. Lime Iron I Magnesia T"" Silica j Chlorides, a trace.

Organic matter, a trace.

" A. W. Gerrard, F.C.S."

* " It is highly probable that loss of sulphuretted hydrogen took place in transit, by diflFusion through the cork."