143 



Higham's Park. 



At the special pond-life excursion to Higham's Park, on 

 August 20th, there was a good attendance of members, two of 

 them being accompanied by welcome friends who were interested 

 in the subject. The weather was, as usual this summer, not 

 quite all that could be desired ; but this shortcoming was amply 

 compensated by the richness of the captures. The following list 

 (by no means exhaustive) was furnished by one member : In 

 Algae : Zygneina (in conjugation), Closteriimi sp., Oedogoniimi sp. 

 In Protozoa : Arcella vulgata, Difflugia sp., Styloyiychia mytilus ; 

 Vot'ticella nebidifera, Zoothamnium arbuscula, Vaghiicola, Stentor 

 miilleri. In Rotifera : Conochilus volvox, Brachionus bakeri^ 

 Stephanoceros eichhornii. In Entomostraca : Alona costata, Bos- 

 mina cormtta, Canthocampus Qninutus, Ceriodajyhnia reticulata^ 

 Chydorus sphericics, Graptoleberis testudinaria, Peracantha truii- 

 cata, Simocephalus vetulus, Scaphioberis mucronata. In Diptera : 

 Tanypus maculata (larva). In Neuroptera : Ephemera vulgata 

 (larva). In Polyzoa : Fredericella sultana and Plumatella repens. 

 This last was in great abundance and fine condition. Plenty of 

 water-mites also were present, but only two species, Unionicula 

 aculeata and Neumania splnipes, were represented. One member 

 ended his list of acquirements with *' a fully stocked museum and 

 aquarium," which is both comprehensive and satisfactory, and in 

 accordance with the experience of most of the visitors. 



ToTTERiDGE (September 3rd). 



East London Waterworks. 



The excursion on Saturday, September 17th, was to the East 

 London Waterworks. By the kindness of the authorities a very 

 pleasant afternoon was spent at pond work. The chief desire 

 seemed to be to acquire Cristatella, and an abundance of this 

 interesting polyzoon was met with. The statoblasts were in 

 such quantity in a quiet corner of one of the streams that they 

 almost blackened the net, and it was no easy matter to get rid of 

 them as they clung to the fabric with their numerous grapnels. 

 Some long grass-stems growing in a deep stream near the 

 entrance were covered so thickly with diatoms as to be invisible 



