1896. ] NEW YORK ACADEMY OF SCIENCES. 127 
which the male Amia has built. They remain thus attached 
until the yolk sac is absorbed. As soon as they are fitted to 
get food they flock together in a dense cluster following the 
male. When hatched in an aquarium they go through the same 
processes. The young fry take food particles only when the 
particles are in motion, never when they are still. The larve of 
Necturus also take food particles that are in motion. 
C. L. Bristou. 
Secretary. 
STATED MEETING. 
February 17th, 1896. 
The Academy met with Vice-President STEvENsoNn in the 
chair. About fifty persons were present. 
The minutes of the last meeting were read and approved. 
The section of Geology and Minerology then organized. 
The Secretary presented the resolutions regarding the bill for 
the introduction of the Metric System of weights and measures 
as adopted by the section of Astronomy and Physics on Febru- 
ary 3rd. It was approved by the section of Geology and refer- 
red to the Council. 
The regular program was then taken up. 
The first paper was presented by Mr. L. MclI. Luquer, entitled 
‘““ Notes on recent Accessions of Interesting Minerals,” with 
exhibitions of specimens. Mr. Luquer described in detail the 
minerals that he had recently discovered at the feldspar quar- 
ries in the northeastern part of Westchester County. They in- 
cluded uraninite, autunite, uranophane, washing tonite and the 
common minerals of pegmatite veins. He showed that the veins 
occurred in close association with an area of augen-gneiss, re- 
garded as intrusive and now being studied by himself and Mr. 
Heinrich Ries. 
The second paper of the evening was by J. F. Kemp, entitled 
the “Cripple Creek Gold Mining District of Colorado.” The 
