Personal and Scientific JVews. 403 
furnished the proof that had been confident!}^ expected. The 
specimens collected were exhibited. 
The second paper was by Prof. J. F. Kemp, On the Glacial 
or Post-Glacial Dicersion of the Bronx River. The speaker 
showed that the Bronx river from its source to Williamsbridge, 
follows an old valley, excavated in limestone. This valley 
continues from a point below Williamsbridge to its end, on 
the sound opposite Randall's island, and there is a depression 
the entire distance. Just below Williamsbridge, however, the 
river turns from its old valley and breaks through a ridge of 
enclosing gneiss on the east. It has excavated a gorge about 
70 feet deep, with large fresh pot-holes remaining on the sides, 
respectively at altitudes of 20 and 50 feet above the sti'eam. 
The maximum hight of the divide between the present chan- 
nel and the older one is only 10 to 15 feet. The speaker found 
dilRculty in accounting for the diversion, in that no barrier 
of gravel or other deposit is visible along the line of the old 
•channel, which would turn the stream froin this across the 
high ridge in which is the gorge. The freshness of the pot- 
holes indicated that the stream had cut the gorge during 
glacial times and since then. He therefore referred the diver- 
sion to the ice of the continental glacier, a lobe of which must 
have filled the earlier channel. It is probable that the early 
excavation was done by a subglacial stream, heavily loaded 
with sediment. 
The third paper of the evening was by D. H Newland, on 
the Eclogites of Bavaria. The speaker described the extent, 
and mineralogy of the rocks and his attempts to discover their 
unmetamorphosed originals. Chiefly on chemical analysis he 
was led to infer that they had been original diabases or gab- 
bros. 
The section of Geology -uid Mineralogy held its regular 
monthly meeting Nov. 16, Prof. Albert H. Chester in the chair, 
as chairman pro tern. The first paper was by Dr. E. O. Hovey, 
entitled " On a deep well-boring at Key West, Fla." Dr. 
Hovey described the geological section uncovered by the well 
for a depth of more than 2,000 feet. A number of microscopic 
organisms were obtained. It i)roved somewhat dirticult to 
identify the geological horizons, but without much doubt the 
well penetrated a considerable distance into the Miocene. In 
the limestone many grains of quartz, possibly of secondary 
depositions were met, and also rolled grains of quartz, doubt- 
less in the nature of sand. Dr. Hovey comments on the sig- 
nificance of the phenomena, and expressed his obligations to 
professor Alexantler Agassiz, from whom the samples had been 
obtained. The paper will appear in full in an early number 
of the Bulletin of the American Museum of Natural History. 
Prof. A. J. Moses then exhibited a number of new niinera- 
logical instruments which had recently been sent from Europe. 
