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Proceedings 15 
The Annual Meeting then resolved itself into an ordinary 
Evening Meeting. 
Present about 20. 
Mr. H. M.Wallis lectured on the Heads and Beaks of Birds, 
illustrating his remarks by numerous black-board sketches. 
Meeting held at Reigate, Nov. 22nd, 1907. 
Present 28. 
Mr. A. E. Tonge exhibited a case of moths of the species 
Calocampa vetusta, the Red Swordgrass Moth,which had been 
bred from eggs obtained from South ‘Tyrol. 
Mrs. Durrant exhibited a flint shaped like an arrow tip, which 
she had found near the sand pit, The Way, Reigate. 
Miss Winifred Smith delivered a lecture on The Relations of 
Ants with Plants, which was illustrated by lantern slides. The 
paper opened with a sketch of the habits of the leaf-cutting 
ants of the American tropics, and the peculiarities of trees by 
which their ravages are withstood. The attractions in the way 
of food and habitation offered by Acacia & Cecropia to warrior 
ants, which protect them from their enemies,were described. 
The adaptations of several plants belonging to the Eastern 
tropics were also mentioned. Among these plants were Cordia, 
Myrmecodia, Hydnophytum,Smilax,Humboldtia,Macaranga 
Dischidia and others. Various theories as to the true relations 
of ants and plants, were quoted, and evidence was collected to 
show how far the benefits conferred were reciprocal, how far 
they were one-sided, and how far the peculiar features of so-called 
ant plants were truly adaptive, and procured by natural selection. 
It was pointed out that the test of true symbiosis was the suffer- 
ing and ultimate reversion to the common type, on the part of 
plants which are separated from their animal allies. 
Meeting held at Redhill, Jan. 24th, 1908. 
Present 21. 
A lecture was delivered by Mr. James Edmund Clark,F.G.S, 
entitled Nature and Travel in S.Africa. 
