23 
cation was considered interesting, and some correspondence 
followed. I have now the pleasure of announcing that I have 
found Trocheta subviridis abundant in another locality, namely, 
on the Beddington sewage-irrigation farm of the town of 
Croydon ; and I am informed that this leech is also to be 
found on the other irrigation land belonging to this town at 
Norwood. The experiences of naturalists have differed re- 
specting the capability of Trocheta of living for any length of 
time completely immersed in water. It may, therefore, be 
interesting if I record that I found it in about six inches of 
water, at the bottom of the great ditch which conveys the 
Croydon sewage on to the estate before it flows over the land, 
and that during the three weeks that have since elapsed, it 
has lived and thriven in a bowl of water with two minnows.’’* 
Guano, containing diatoms, was distributed to the mem- 
bers by Mr. George Cooper, M.R.C.S. 
Messrs. W. E. Rogers; B. R. Taylor; E. Ewart; 
C. E. Leeds; and E. C. Oswald were elected members of 
the Club. 
November 23rd, 1870.—Tue Sorree at tae Pussic Hatt.— 
This brilliantly successful entertainment was not only 
attended by the principal families of Croydon and the neigh- 
bourhovud, but also by several persons of distinction, among 
whom may be mentioned the Japanese Ambassador and his 
secretary, who appeared to take a deep interest in the large 
variety of objects brought under their notice. Three tables 
extended along the entire length of the room, leaving of 
course, sufficient space for the visitors to promenade, and ex- 
amine the numerous object of interests which were presented 
for their inspection. Each table was covered with green 
baize, on which the instruments were displayed. That in the 
centre was reserved for members of the Royal and Linnzan 
Society, the Royal Microscopical Society, the Quekett Micro- 
scopical Club, and the Old Change Microscopical Society. 
The tables to the right and left of the centre were reserved 
for makers of optical instruments, of whom a large number 
greatly contributed to the success of the soirée by their ex- 
hibition of about 75 microscopes. The tables around the 
sides and end of the hall were occupied by the members of 
the Croydon Microscopical Club. 
* At the date of issue of this report (three months after the above account was 
given) the leech is stil] alive and in good condition, having been kept in 
2 all the time in Mr. Woodward’s room at the British Museum.— 
. LEE. 
