162 Screntific Intelligence. 
persons and at some places was et ag by a rumbling 
noise. ‘The direction was north to so 
Oct. 9. A severe earthquake at Mautelen: the capital of 
Antioquia, United States of Columbia, destroyed over a hun- 
dred houses, including the church, hospital and city by < 
Oct. 11. At San J osé, Costa Rica, a feeble shock at 5 P. M 
The same vgs at ae 30 Pp. M. a severe shock at San 
José, Cal., accompanied by a rumbling noise. The vibrations 
were north and south and lasted “thirty seconds.—(U. 8. Weather 
ev. 
ct. 21. At 5.40 P.M. two shocks from north to south at Sac- 
ramento, Cal.—(U. S. Weather Rev.) 
Noy. 11. At 9.45 a.m. a slight shock from east to west at San 
i aicioee. —(U. 8S. Weather Rev 
Nov. 18. A shock was felt at St Louis, Cairo, Memphis, 
Little Rock and other places in the Mississippi Valley. The 
direction was generally north to south. The time was reported 
a the Si na Service observer at Cairo as 115 51™ 505 
He says, “a trembling was felt, lasting forty svn 
llowed by a rocking motion from W.N.W. to E.S.E. las 
ing twenty seconds, and a second trembling lasting ten ohh 
Another slight shock was felt at Cairo at 5. 10 A. M. of the 19th, 
the direction of which was also W.N. 
Nov. 23. At Murphy, N. C., a ae 
west toe east, with a rumbling noise.—(U. 8. Weather Rev.) 
Princeton, N. J., Jan. 1, 1879. 
SCIENTIFIC INTELLIGENCE. 
I. CHEMISTRY AND PHYSICS. 
1. Note on J. C. Draper’s paper “On the presence of Dark 
Lines in the Solar _ which correspond closely to the lines 
of the Spectrum of Oxygen.”—The paper above referred to 
appeared in the October marta of this Journal. A cursory 
glance at it gives the impression that the methods had been care- 
fully criticised beforehand, that the experiments had been made 
4 minute ri gt) and that the results were trustworthy ; but 
closer examination of raises most serious questions on all the 
points mentioned: Err rs of method and of experiment appear 
hed. 
Angstrém rs 
example, p 257, hs xe says, line 18, the sae So s were “in 
sections so el hes one hundred wave lengths,” line 24, 
“each wave length being five millimeters in extent,” and line 
my Saat section of one hundred or more wave-lengths ;” 4 
