\ 
152 Scientific Intelligence. 
resemble those of Pernes, near Bethune, where the chalk rests on 
the upturned Devonian. Professor Prestwich attributes the 
calcareous character of the Lower Greensand to the Paleozoic 
limestones on which it rests. 
8. Fossils of the Utica Slate and Metamorphoses of Triarthrus 
Becki, by C.D. Watcotr. Trans. Albany Institute, June, 1879. 
after remarks on the Hudson River Group, 
and then gives, with much detail, an account of the synonym 
and metamorphoses of 7riarthrus Becki which is illustrated by 
sixteen figures. The smallest individual of the species described 
and figured has only one thoracic segment and a length of but 
1°125 mm., and the largest a length of 53 mm. In the former the 
ygidium is very nearly as long as the head segment, and in the 
latter it is one-third as long. The memoir closes with a table of 
Utica slate fossils showing their stratigraphical range. 
New Calciferous fossils from Saratoga County, New York. 
—Mr. C. D. Walcott has described as new the following species: 
Platyceras minutissimum, Metoptoma cornutiforme ; Condeepie 
alites caleiferus, C. Hartii, Ptychaspis speciosus. Bathyurus 
armatus of Billings (from the Quebee group), or a form closely 
related, also occurs in the beds.—32nd Ann. Rep. N. Y. Mus. 
Nat. Hist. 
10. Fossil wood related to Cypress from Calistoga, California. 
—-H. Conwentz, of Breslau, has published in the Jahrbuch fir 
Mineralogie, ete., for 1878, a description, with microscopic sections, 
of a fossil wood from Calistoga, which he has named Cupressi- 
noxylon taxodioides. 
ll. Hr 
dbeben-Studien von R. Harnes.—After a general discus- 
great mountain chain, earthquakes take place along periphe 
lines of fracture which are shown by the progression of the points 
of shock. These disturbances seem to be produced by the sink- 
chain, radial lines, coinciding with c on which severe 
earthquakes often occur. These radial lines very probably are to 
1 part as the boundaries of masses occasionally 1n- 
awn, since the 
