332 J. C. BRANNER 



9. Dom Pedro d^ Alcantara. — Tremblement de terre survenu au 

 Bresil le 9 mai 1886. Comptes Rendus, CII, 1351-52. Paris, 1886. 

 Also in Nature, XXXIV, 1887-88. London, 1886. 



This is a letter from the Emperor Dom Pedro II to M Daubree, reporting a 

 shock felt at Petropolis at 3: 20 p.m. on the date mentioned. He notes the rattling 

 of windows, and that the shock continued about four seconds. He reports the 

 general area over which the shock was felt; it amounts to about 25,000 square 

 kilometers. 



10. M. CruJs. — Tremblement de terre au Bresil. Comptes 

 Rendus, CII, 1383-84. Paris, 1886. 



The shock described by M. Cruls, late director of the astronomical observa- 

 tory at Rio de Janeiro, is the same as that reported to the French Academy by 

 Dom Pedro II. He says it occurred at Rio de Janeiro, May 9, 1886, between 3 

 and 3:30 P.M., that it lasted from a few seconds to a minute, and was felt in the 

 provinces of Rio de Janeiro, Sao Paulo, and Minas over an area about 250 kilo- 

 meters long by 1 10 kilometers wide, with its longer axis lying N. 60° E. 



1 1 . Alvaro A . da Silveira. — Os tremores de terra em Bom Successo, 

 Minas Geraes, Bello Horizonte, 1906. Originally published in Minas 

 Geraes, the official organ, at Bello Horizonte, November i, r90i. 



An earthquake occurred at Bom Successo in the southern part of the state 

 of Minas Geraes on April 4, 1901. The governor of the state appointed Sr. 

 Alvaro A. da Silveira to collect information in regard to it. His official report 

 along with other articles that were puulished on the same subject are brought 

 together in a brochure of 137 pages. The following are the matters of chief 

 interest: 



The first shock that was noticed occurred at i p.m., April 4, 1901; it was strong 

 enough to rattle dishes, and was accompanied by a rumbling noise. 



April 5 at 5 a.m. there was a similar shock. ■ 



Subterranean sounds continued to be heard during the months of April, May, 

 and June. 



July I at II P.M. there was a strong shock, and subterranean sounds con- 

 tinued to be heard through July and August. During the latte-r half of August 

 no sounds were heard. 



September 4 at 6 p.m. a sharp shock was felt, about like that of April 4, and 

 people left their houses. During the rest of September and during the first half 

 of October sounds like distant thunder were occasionally heard. Between the 

 9th and the 15th of October there was but one rather loud rumbling; the others 

 were all small. 



He repeats that there were barely four shocks in all; that they caused no 

 damage whatever, even to houses whose walls might easily have been thrown down. 



