12 PROCEEDINGS OF THE 



Dr. Staff showed an abnormal fruit of Sycamore, Acer Pseudo- 

 platamis,oa behalf of Mr. W. B. Tuerill, and read the following 

 statement : — 



The specimen was found near "Woodstock, Oxfordshire, on 

 September 16th, 1912. 



There are seven distinct carpels, six of which have perfected 

 seeds. The fruit is apparently composed of two parts, the larger 

 having four carpels, each of which has perfected seeds, and the 

 smaller three carpels, one of which is sterile, though a good wing 

 has been produced. 



Transverse sections through the pedicel were compared with 

 similar sections made through the pedicel of a normal two-winged 

 fruit. There are slight differences in structure between the two 

 sets of sections, but nothing to indicate so large an increase in 

 vascular strands as might be expected if two or three flowers had 

 fused together. 



0. Penzig (" Pflanzen-Teratologie," vol. i. p. 364) makes the 

 following statements concerning an increase in the number of 

 carpels of the flowers and fruits of the Sycamore : — " An increase 

 in the number of carpels in the flower is very frequent. Three, 

 four, five, and even eight carpels have been seen in one flower. 

 The accessory carpels are often inserted somewhat higher than 

 the normal ones, so that (in four-winged fruits) the pistil appears 

 to be made up of two decussate pairs of carpels." 



A paper by Mr. AV. Botting Hemslet, F.E.S., P.L.S., on the 

 Genera Radamcea, Benth. and Nesogenes, A. DC, was read in 

 abstract by the Botanical Secretary. 



The last paper, by Prof. E. J. Hartey GtIbson, P.L.S., and 

 Miss Margaret Knight, B.Sc, on Marine Algae collected by 

 Mr. Cyril Crossland in the Eed Sea, Part II., was mainly a list of 

 species, 46 in number, 35 of which are additions to the former 

 list. 



March 6th, 1913. 

 Prof. E. B. PouLTON, F.E.S., President, in the Chair. 



The Minutes of the General Meeting of the 20th February, 

 1913, were read and confirmed. 



Mr. Charles Oldham, F.Z.S., M.B.O.U., and Mrs. Eose Haig 

 Thomas, were proposed as Fellows. 



Dr. Hermann von Yochting, Professor of Botany in the iTni- 

 versity of Tiibingen, was proposed as a Foreign Member. 



