204 



intellect as assumed by Mr. Rousselet, but rather a lower type 

 of morality ! 



The following note by Mr. A. A. C. Eliot Merlin, F.RM.S,, 

 was read by the hon. secretary : 



Note ox a New (?) Flagellated Monad. 



While examining the infusoria in some slightly brackish water 

 containing rotting weed, under a Powell achromatic ~ in. oil 

 immersion objective of measured N.A. 1*27,* a rapidly moving 

 flagellated form was noted furnished with a very curious and 

 interesting appendage which, when viewed sideways, gave to the 

 whole monad the shape of a chemist's retort. The creature 



when first seen was entangled in and its movements hampered by 

 some weed filaments, otherwise the appendage might probably 

 have escaped notice, it being normally carried under the rapidly 

 moving organism so as to form a kind of keel. 



I have prepared a rough outline sketch showing the general 

 features of this form. The body, measuring ^q^^ * ncn * n 



: This objective has been found very suitable and convenient for use on 

 living organisms, as it combines sufficient aperture with qmte exception- 

 ally great working distance, allowing it to focus through cover-glasses and 

 water-films of considerable thickness ; it can therefore be used under 

 conditions where an ordinary oil immersion lens could not be employed. 



