25 
Mr. D. J. Scourfield, F.Z.S., F.R.M.S., gave a lecture 
on ** Locomotion in Minute Aquatic Organisms.’’ The Ameba 
moved by the extension of its substance in various directions. 
Euglena and Peridimia depended for locomotion on a whiplike 
organ—the “ flagellum,” Rotifer and Vorticella on numerous very 
fine hairlike organs—“ cilia.’ Various small worms and larve 
progress by throwing the whole body into “ figure of eight ” motions 
Salpa projected itself by expelling water from the end of its body. 
Entomostraca had specialized organs actuated by muscles to swim 
with. 
Desmids, Diatoms and Osctllatorie moved in an imperfectly 
understood manner which called for further investigation. 
+++ 
Vacation Meetings. 
Meetings have been held each month during the vacation of 
1908. 
Saturday, May 23rd.—Members met for a ramble in the neigh- 
bourhood of Chenies under the guidance of Mr. James E. Whiting. 
Saturday, June 27th.—Taking train to Caterham, members 
walked to Merstham. A Field Lecture on the ‘‘ Lower London 
Tertiaries ”’ was delivered by Mr. F. W. Rudler, I.S.0., F.G.S., a 
pebble quarry above Caterham serving as a lecture theatre. 
Saturday, July r8th.—Under the guidance of Mr. Hugh Findon, 
_ members proceeded to North Weald Station and walked by wood- 
land and field paths to Epping Plain, returning from Epping station. 
Saturday, August 15th.By the request of members an 
additional excursion was arranged. The party visited Purfleet 
quarries, and walking to West Thurrock, they, at the invitation 
of the Vicar, joined the Morley Archeological Society in listening 
_ to a discourse by the reverend gentleman on “‘ Dene Holes.” 
Saturday, September 26th.—Members took train to Northwood, 
_ and, conducted by Mr. S. P. Alcock, walked across the fields to 
_Harefield. The Vicar of Harefield and Mr. H. Plowman, F.S.A., 
addressed the party on the antiquities of the village. The return 
_ was by the canal path to Rickmansworth. 
Saturday, October 3rd.—A meeting was held in the museum of 
the Royal College of Surgeons. Mr. R. H. Burne gave a discourse 
on comparative anatomy as illustrated by that portion of the 
_ collection devoted to the skin and sense organs. 
