140 



gestions were made as to the more suitable materials for the 

 making of the roads, and as to the amount of camber that is 

 desirable in their construction. 



Prof. Kendall then spoke ot the prohibitive price charged 

 by Government for coloured geological maps, which stultified 

 the work of the Geological Survey, because no one would 

 buy the maps. Prof. Watts said the result now in England 

 is, that the people have to be educated with American maps, 

 and thus learn not the English geological interpretation of 

 Nature, but that of the U.S.A. The Geological Society had 

 taken up the question, but so far without result. 



The Conference was then brought to a close. 



If I may add a postscript, I would call the attention of 

 members to Prof. G. C. Bourne's Presidential Address to 

 Section D (Zoology), in which he discusses the various 

 aspects of the science of morpholog3^ I hope later on to be 

 able to place the full report of the meetings in the library, 

 and would strongly advise members to read this address. 

 It is already printed in " Nature " of September 22nd, igio. 



NOVEMBER z^th, 1910. 



The Annual Exhibition of Varieties. 



Mr. J. Piatt Barrett exhibited long series illustrating — 



(i) The variation of Melanargia phenisa in Sicily, (a) 

 ? Type with five rings on each hind-wing ; (6) rings decreasing 

 in size and becoming spots and blotches; (c) no rings or 

 spots — only small blotches attached to sub-marginal line; 

 {d) ab. plcsaura — ^ without rings, spots or blotches on hind- 

 wings ; one extreme specimen had also partly lost the sub- 

 marginal line and the spot near the anal angle of the upper 

 wing. 



(2) The local variation of M. galathca. {a) Messina, very 

 dark, v, procida ; (b) Mount Etna — less dark; (c) Syracuse 

 — ditto ; (d) Monte Cicci — v. pvocida. 



He also exhibited (3) dark specimens of Vanessa io, bred 

 1910, and suggested as a possible cause that the larvae were 

 fed near the junction of two geological strata. 



Mr. Robert Adkin exhibited a series oi Polyommatns icants, 

 from Eastbourne, including strongly blue-scaled lemales of 

 the spring and autumn emergences of the present year, the 

 latter varying in tone of the blue colour between dull lilac- 

 blue and bright " bellargiis" blue; one entirely without blue 



