332 PROFESSOR AV. F. R. WELDON, F.R.S. 



subject, is the note on " Pakonondes varians in Plymouth," published 

 in the Journal of the Association (N.S., I., 1890, p. 459), in which the 

 variations of the teeth on the ro.-^trum of this species are recorded 

 from an examination of 915 individuals. Later papers based upon 

 work done at Plymouth or upon material obtained there are : — 



" The Variations occurring in Certain Decapod Crustacea. 1. Cranrjon 



vuhjaris " {Proceed, lioy. Soc., vol. xlvii. p. 445). 

 " Certain Correlated Variations in Crangon vulgaris " (Proceed. Boy. 



Soc, vol. li., 1892, p. 1). 

 " Certain Correlated Variations in Carcinus mcemis " (Proceed. Roy. 



Soc, vol. liv., 1893, p. 318). 

 " An Attempt to Measure the Death-rate due to Selective Destruction 



of Carcinus mccnas, with res])ect to a Particular Dimension" 



(Proceed. Boy. Soc, vol. Ivii., 1895, p. 360). 

 " Remarks on Variation in Animals and Plants " (Proceed. Boy. Soc, 



vol. Ivii., 1895, p. 379). 

 "Presidential Address to the Zoological Section (on Natural Selection 



and Variation) " (Beport. Brit. Assoc, 1898). 



l*rofessor Weldon became a member of the Marine Biological Associa- 

 tion in 1884, the year of the inauguration of the Association, and his 

 name first appears in the list of Founders in 1887. Tn 1888 he was 

 elected a INIember of Council, and from that time he continued to serve 

 the Association in this capacity, having been in recent years the 

 representative of the British Association for the Advancement of 

 Science. His time and energy have been freely devoted to the work of 

 the Council, and his personal experience of the various departments 

 of the Association's activity have given special value to his views and 

 recommendations upon many important questions of policy, which the 

 Council has been called upon to determine. 



When the Association undertook to carry out for His Majesty's 

 Government the programme of International Fishery Investigations in 

 the English area. Professor Weldon gave particular attention and 

 devoted much time to the vast amount of statistical work, which is 

 entailed by those invc-jtigations, and the fact that both the general 

 methods and the results so far published were subjected to his careful 

 and critical examination has added greatly to their value and to the 

 confidence with which the Council was enabled to regard them. 



By his enthusiasm, his energy, and the keenness of his intellectual 

 insight, Professor Weldon helped largely in the attainment ot the 

 success which has attended the efforts of the Marine Biological Associa- 

 tion, and by his ever-ready co-operation with his colleagues on the 

 Council, and with the members of the scientific staff, he so endeared 

 himself to all those with whom he was associated in the work that his 

 death has left a gap whicli it will luirdly be possible to fill. — E. J. A. 



