24 C. G. Rockwood— Recent American Earthquakes. 
unusual activity, and eruptions of lava with occasional earth- 
quake shocks occurred during the week preceding the tidal 
wave, especially one at 2.45 P. M., May 4th. 
More detailed local reports of the phenomena may be found 
in this Journal, III, xiv, p. 77, U.S. Weather Review, May, 
1877, Scientific American, vol. XXXvli, pp. 3, 345, Nature, vol. 
Xvi, pp. 112, 174, 198. 
May A slight shock in the afternoon in Schenectady and 
Schoharie Counties, : 
May 14. A severe shock at Lima and Callao, lasting twenty- 
two seconds. 
ay 15. From Port Stanley, Ont., it is reported that a wave 
five feet high, apparently due to some earthquake shock, swept 
along the northern shore of Lake Erie, followed for an hour by 
smaller ones, 
May 25. A shock at Knoxville, Tenn.—(U. S. Sign. Serv.) 
May 26. A shock at 3 P. u. at New Harmony, Ind.—-(U. S. 
Sign. Serv. 
May 30. A heavy shock between 2 and 8 4. M., at Pasa 
Robles, Cal. 
June ll. A voleanie eruption, smoke and boulders, in the 
mountains near Flowing Wells Station, Southern Pacific R. R., 
about sixty miles from Yuma, preceded by a violent vibration 
of the earth. : 
June 18. At Milwaukee, Wis., at 7.80 P. M., the water in 
Lake Michigan fell two feet in half an hour and rose again 
more quickly.—(U. S. Sign. Serv. 
June 28. A shock about 11.30 P. M. at Bakersfield, Cal. 
“It seemed to be in the nature of an upheaval rather than 
vibratory.” 
July 9. Ashock at Sacramento, Cal., lasting one minute. Oscil- 
lations, E. and W.—(U. S, Sign. Serv.) 
July 14. Two shocks at 6.40 Pp. M., at Memphis, T'enn., last- 
ing several seconds, vibrations from S. W. or W. to N. EK. or E. 
July 15. Three shocks apparently from the west, and lasting 
five seconds, at Carbondale, Il.—(U. 8. Sign. Serv.) 
July 17. A sharp shock at 8 4. M., lasting about thirty 
seconds, at River du Loup, Canada. 
Aug. 10. A shock lasting several seconds at Florence, N. J.— 
(U. 8. Sign. Serv.) 
Aug.17. A slight shock about 11 4. ., felt in Detroit, 
Mich., and a few neighboring towns. It lasted from thirty 
conds to one minute, and was accompanied by a rumbling 
sound, 
