xlii rROCEEDIXGS OF THE 



mass of brick-cartli, for which one of the pits is mostly worked. 

 In the basement-bed of the London Chiy a mammal's bone, sharks' 

 teeth, an annelide {Ditrupa /;/«««), wood, impressions of leaves, 

 and the following species of MoUusca, have been found :* — 



Fitsm, sp. Cytherea orbicularis. 



Nalica, sp. NucuIcl, sp. 



Cardium Laytoni. Oslrea Betlovaeina. 



Cyprina Morrisii, Panopcea intermedia, 



Cytherea obliqua. Soleii, sp. 



The meeting terminated at the residence of the President, at 

 Nash Mills, about a mile and a half south of the brick-fields ; and 

 on their arrival here the members were hospitably entertained at 

 tea by Mr. and Mrs. Evans, and for the second time had the ad- 

 vantage of examining a number of carefully- selected examples of 

 the extensive collection of pre-historic implements, and more recent 

 ornaments, coins, and other interesting and valuable objects, which 

 Mr. Evans has formed. 



Field Meeting, 1st July, 1876. 

 Elstkee Eeservoir and Stanmore Common. 



To meet again the Quekett Microscopical Club, and to collect 

 microscopic objects, as on the 3rd of June, a few members only 

 of the Watford Natural History Society assembled at Elstree 

 Reservoir on the bridge at its upper end. 



At first a little collecting was done in the resei'voir itself ; but no 

 objects of special interest finding tlieii- way into the nets and 

 bottles, some small pools near were tried, and here the most in- 

 teresting object obtained was the Vohox globator, a free-swimming 

 microscopic plant, which has been referred as often to the animal 

 as to the vegetable kingdom, but seems now to be generally regarded 

 as one of the confervoid algoe. It is a delicate green globe, which, 

 moving gracefully through the water, revolving as it goes, is just 

 visible to the naked eye, and under the microscope is seen to 

 contain within its transparent membrane other smaller globes, 

 the miniatures of itself, and these again sometimes even a third 

 generation in embryo. 



By the side of the reservoir several plants of larger dimensions 

 and more steadfast habits were collected ; and in their botanical 

 researches the members of the two societies had the advantage of 

 the presence of two good botanists — Mr. Leo Grindon, author of the 

 well-known 'Field and Garden Eotany,' and Mi-. W. "W. Reeves, 

 Assistant Secretaiy of the Royal Microscopical Society. Mr. 

 Grindon's poetical yet truly philosophical expositions of the 

 structure and uses of the ditfereut organs of various plants met 

 with formed, indeed, a distinctive feature in the meeting ; and 

 when the party arrived at Stanmore Common, it was found that 



* This and tli.- list of fossils of the chalk-rock aie from Mr. Whitakcr's 

 'Geology of the London IJasin,' part i., iu which further particulai-s of the 

 Boxmoor and Ueunet's End pits are yiveu. 



