370 



any relation between the variations and the habitats of these 

 Rotifers. 



Mr. Rousselet had no donbt the varieties had to do with 

 their surroundings, because he had noticed that the Brachionus 

 found at the same time were usually of the same varieties, 

 although other varieties might be found at the same place at 

 different times. In the tank at the Botanic Gardens there 

 were constantly two varieties. 



Dr. Measures said the slide exhibited by him contained three 

 specimens showing the extent of the variations of those found 

 at Hanwell daring the Club excursion on July 25th. He had 

 much pleasure in presenting this slide to the Club. 



The President thought papers of this kind were extremely 

 useful, since all the information they could obtain as to varia- 

 tions of species was of importance. He proposed a cordial vote 

 of thanks to Mr. Rousselet for his paper.— Carried unanimously. 

 Mr. Merlin's paper, " On the Hairs of a Fly's Foot," was read 

 by Mr. Karop, who remarked that in many cases, no doubt, 

 globules at the ends of hairs had been mistaken for trumpet- 

 shaped hairs. It was curious, however, to note that even in 

 these advanced days an old question like this was still unsolved. 

 The slide which accompanied the paper had been handed over 

 to Mr. Nelson for examination. 



Mr. Nelson said he had great pleasure in examining this 

 slide, and would suggest that members should go over some of 

 their old slides of insects' feet, because they were very 

 interesting objects. In connection with the questions raised 

 by the paper, he did not see why someone should not inject 

 these hairs, because there was certainly a pipe running down 

 the leg and branching off into smaller pipes, each of which 

 went to one of these hairs, and he thought, therefore, that 

 some of their entomologists who did such wonderful things 

 might be able to do this also. 



Mr. Karop read a letter from Mr. Earland describing the 

 contents of a bottle given to the Club some time since by Mr. 

 Andrew, and said at the time to be dredgings from the 

 Challenger expedition. It appeared, however, to have come 

 from Port Darwin. 



Announcements of meetings for the ensuing month were 

 then made, and the proceedings terminated. 



