66 Scientific Intelligence. 
Level of Thickness Surf. pitck 
giac. ekera: valley. ofglacier. Distance. Descent. for 1000m- 
i. od ci Stock __. 3,084 2,190 894 45,000 1,724 38 
So. eerevery 8 Ge 1,360 437 923 13.000 : 0 0 
3 Goitharl is Soeee 1,360 437 923 : 
7,00 280 40 
4c BOnBbeRe 3 oe ee 1,080 417 663 
30,000 180 6 
5 Tasdbaberg pa ener 409 491 ; 
26,000 100 4 
o tere oS. 800 366 434 11.000 215 25 
4. Reinerberg -..---. 525 330 195 ‘ 25 4 
8. Bottenberg -..---- 500 323 177 
Professor Favre remarks on the gentleness of the pitch over all 
the old Swiss glaciers. The glacier’ s height at Morcles below 
gee h 
Swiss plain, of 298 m. in the 78 km. or 49 mi iles, between the two 
places, equivalent to 4:1000. At Chasseral, 57 km. to the north- 
east, the feiig height was 1306 m., and at Mt. Saléve, near 
Geneva, 92 km. from Chasseron, it was 1308 m.; and hence, over 
a distance of 149 ‘tah across the plain, the surface was horizontal. 
he thickness of the glacier at Chasseron was 917 m. and a 
Chasseral about 87 
Professor Favre also speaks of the wide difference in some cases 
between the limits of the modern and the ancient hydrographic 
basins and course of drainage. 
3. De re cal at Geological Sections crossing New Hamp- 
shire and Verm pet Professor C. H. Hitcucock. 34 ee ri 
have much value. Professor Hitchcock here makes, as he 
before announced, the Taconic slates of Emmons, south of Middle- 
bury, to be Lower Silurian in age, and not older than the Trenton 
or the later part ne the Trenton (the Hudson River or Lorraine 
division). The rtzyte is regarded as the Potsdam sandstone, 
and as sa ea panvine, ation 3 the Green Mountain rocks farther 
east 
The writer’s opinion as to the existence of Archzan rocks in 
outhern Vermont is mentioned, and he therefore here states that 
i has found evidence of the existence of isolat rchean areas 
there, but that his examination of the beds of Mt. Mansfield lead 
him to doubt the Archean age of a large part of the Repke: 
ne 
The Till-ridge of vee Haven, called Round Hill. __-Profess 
vw. M. Davis, in his er on Drumlins s (this Journal, ye 
413, 1884), objects to ne view that the material of Round Hill 
was «deposited by waters p wees oe a crevasse or oe t of 
crevasses in the glacier (this Journal, xxvi, 358, 1883), on ee 
ground of the absence of stratification. Bearing on this point I 
would recall the —_~ that a prion trench or valli: 40 to 60 feet 
deep (120 to 130 f above the sea-level, and 170 to 180 below 
the ents of the hil), extends halturny around the hill, and is cut 
