In Planorbis boissyi and P. mareoticus, and in Melania sp. Adult form (?).
For characters of numerous other cercariæ which occur in fresh water molluscs see “Die Susswasserfauna Deutschlands,” Max Lühe, H. 17 (Gustav Fischer, Jena, 1909).
The characters of Cercaria japonica of S. japonicum in the mollusc Katayama nosophora and of C. mansoni have still to be defined.
Schistosoma mansoni, Sambon, 1907.
The evidence appears to be strong that terminal-spined eggs are not found in the West Indies, and that therefore the lateral-spined eggs found in fæces there belong probably to S. mansoni. If this be true, then the egg described by Stephens and Christophers in man in India probably also belongs to another species of Schistosome.
NEMATODA.
Ancylostomiasis.—Treatment: (1) Oleum chenopodii (U.S.P.), dose ♏ x to ♏ xv on a lump of sugar, three doses at two-hourly intervals, preceded and followed by a purge. It is cheap, not unpleasant to take, and non-toxic. Effective also against Ascaris lumbricoides.
(2) Milk of the higueron Ficus laurifolia. A spoonful in milk, three times daily for three days followed by a purge. Described as a harmless but very successful form of treatment.
Ground-itch.—Completely cured in a few days by a 3 per cent. solution of salicylic acid in ethyl alcohol. Apply for five minutes twice daily.
Ascaris lumbricoides can be kept alive for twelve days in Kronecker’s solution; NaOH 0·069 grammes, normal saline 1,000 c.c.