19 



three with him in the camp, twelve were missing, and five 

 woundra Daring the latter part of the evening Mr Selous 

 exhibited on a farge screen a number oi^^-^^XT^Toi 

 iUustrating incidents of his hunting expeditions. In most of 

 these lion? plaved a prominent part, but one picture showed the 

 Wer in g?ea peril^rom an elephant, and in another he was 

 ienalmosf slaughtered by a savage buffalo. There were also 

 some vTews of African scenery, the most remarkable being a 

 series of pictures of the Victoria Falls, and some pictures 

 reminiscent of the Matabele campaign. 



WEDNESDAY, APRIL 13th. 



PARASITISM 



(With Lantern Illustrations). 



BY 



Mr. D. E. CAUSH, L.D.S. 



Many, perhaps most, animal., even some of the smallest 

 take in lodgers and boarders. This fact m natural history is 

 prettily summarised in a familiar couplet :— 



" Big fleas have little fleas upon their backs to bite 'em, 

 LitUe fleas have lesser fleas and so ad inlimHim. 

 Mr. Caush said that these co.npanionships were so general both 

 in the animal and vegetable w .id that the difficulty was to know 

 where to start in ^ilkm, about them. If size were made tne 

 Test then in the vegetable world ihey had p.rasites varying in 

 s?ze f rom the minute bacteria on which Dr. Newsholme discoursed 

 so ably before the Society a short time since of which it would 

 require some millions to cover a square inch if laid side by side, 

 to the tropical parasitical plant whose flower will measure from 

 two to three feet across when expanded ; or we may form some 



lea of their size by examining the giant trees of the tropica 

 forest killed by the'ever-twining stems of these parasitical 

 Sants If they confined theaiselves to those living upon insects 

 r animals, they had a range from the infinitely small to thc^e 



five or six feet long human parasites, who live upon 



^^^^^ ^^"^^^S ^d'^^y^' ^rTd^ertisUL^'^^f 

 ^^ to'fi," &c. K was not, however, of this 



