PEOCEEDINGS OF THE SOCIETY. 391 



Leydigia quadran gidaris), but others had lost all power of swimming 

 (Hyocryptus sordidus) and only used their large antennae and post- 

 abdomen for pushing themselves about in the mud. Mr. Scourfield said 

 he feared the exhibition was not a very good one from the " pretty 

 object" point of view, but thought it would be found fairly repre- 

 sentative of the various habits of life of the different animals included 

 in the order Cladocera. Most of the living specimens were exhibited in 

 Eousselet live-boxes, but he had also shown a specimen (Daphnia magna} 

 in another way to illustrate a method of examining the swimming move- 

 ments of Entomostraca. In this arrangement the head of the animal 

 was attached to a pin by means of a small drop of sealing-wax varnish, 

 and it would be seen that the creature could carry on all its movements 

 quite freely without being able to get out of the field of view. He 

 should be very glad if the result of an exhibition of this kind were to 

 excite more interest in this class of creature, and to induce other micro- 

 scopists to take up their study. 



The President thought it would be hardly necessary to ask the 

 Fellows to vote their thanks to Mr. Scourfield for this very interesting 

 exhibition which he had taken a great deal of trouble to arrange for 

 their inspection. 



The thanks of the Meeting were then unanimously voted to Mr. 

 Scourfield. 



Dr. Hebb said he had much pleasure in announcing that the Hon. 

 Walter Rothschild had most kindly invited the Fellows of the Society 

 to visit hi6 Museum at Tring, on Saturday, June 21. Those who de- 

 sired to go should send in their names, on or before May 31, to the 

 Assistant Secretary, from whom further information relative to the 

 excursion could be obtained. The number of the party was limited to 

 50, and if more than that number of applications were received a ballot 

 would be taken to decide who should receive cards of invitation. 

 Another excursion, limited to about 30, had also been arranged for 

 Saturday, July 5, to the Zoological Gardens. He should like to add 

 that these invitations were entirely due to the initiative of the President, 

 and also that Mr. Eothschild had promised to provide vehicles for the 

 conveyance of the party to and from the station. 



The President said he was sorry they could not go down to Tring 

 100 or 200 strong, but it was obvious that many might not care about 

 taking part in such a large gathering, which would also be very difficult 

 to arrange for. He thought it probable that Mr. Charles Eothschild, 

 if he had returned home from America by the date named, might be 

 willing to exhibit some of his microscopical collections. 



As regarded Dr. Sclater's invitation to visit the Zoological Society's 

 Gardens, there was no reason why, although a Microscopical Society, 

 they should not sometimes indulge in macroscopic studies, and that the 

 idea of providing some out-of-door form of recreation for the Fellows 

 would not be considered too frivolous. On some future occasion they 

 might arrange a series of afternoon visits to the Natural History 

 Museum, when their late President, Mr. Carruthers, would no doubt be 

 happy to conduct them through the Botanical department, whilst he 

 himself would gladly do the same in the Geological galleries, where 



