556 FORTY-NINTH ANNUAL REPORT. 



Croydon Natural History Society. 



Indian Museum., Calcutta. 



Royal Society of N.S.W. 



American Microscojncal Society. 



Smithsonian Institution. 



Academy of Natural Science, Philadelphia. 



Missouri Botanic Garden. 



Philippine Journal of Science. 



Bergen Museum. 



During the year eleven excursions were held, at which the 

 average attendance was 23, against 20 - 8 for last year. Notwith- 

 standing the inclement weather on some of the dates, the average 

 attendance for the year is a record. An excursion had been 

 arranged for August 8 to Hampton Court, but owing to the 

 unfavourable weather and the excitement caused by the war, it 

 was abandoned. Arrangements had also been made for an 

 excursion to the East London Water Works, but owing to the 

 war, the authorities cancelled the permission. An excursion 

 instead was made to various ponds in Epping Forest, which was 

 very successful. There were no new species to record, but 

 Lemna minor was found abundantly in flower in one of the ponds 

 in Trent Park. The thanks of the Committee are due to His 

 Grace the Duke of Northumberland and to Sir Philip Sassoon 

 for the permission to visit their private grounds. 



The Curator reports that all through the year there has been 



a steady demand for the slides and instruments under his care, 



and 111 preparations have been added to the Cabinets. The 



principal addition has been the purchase of 47 fine slides of 



selected Diatoms mounted in styrax, thus bringing up the Club's 



collections of Diatomaceae to 1,550 preparations. For some 



time past Mr. Rousselet has been engaged in the onerous task of 



overhauling, and in many cases remounting, the type-collection 



of Rotifera he presented to the Club some years since, to 



which he has recently made a further donation of 24 slides, 



thus increasing the total to over 260 species. The cordial 



thanks of the Club are due to Mr. Rousselet for his labours, and 



the Club is to be congratulated on possessing what is believed to 



be the most complete type- collection of Rotifera in the worldj 



with the exception of Mr. Rousselet's private collection. Up to 



