AND SEMI-ANNUAL SEISMIC PERIODS. 
1127 
Basin of the Rhine and Sivitzerland. 
33. A. Peerey, ‘ Brit. Assoc. Eep.,’ 1858, p. 13. 
Duration of record, 9th to 19th centuries. Number of earthquakes, 529. 
Period. 
Maximum. 
Amplitude. 
Annual. 
January, h 
•38 
Semi-annual. 
f June, a 1 
t December, a j 
•15 
Basin of the Danube. 
34. A. Peerey, ‘ Brit. Assoc. Bep.,’ 1858, p. 14. 
Duration of record, 5th to 19th centuries. Number of earthquakes, 268. 
Period. 
Maximum. 
Amplitude. 
Annual. 
November, h 
•14 
Semi-annual. 
f January, a 1 
•30 
1 July, a / 
Italy. 
35. A. Peerey, ‘Brit. Assoc. Rep.,’ 1858, p. 16. 
Duration of record, 5bh to 19th centuries. Number of earthquakes, 984. 
Perrey’s district includes the whole of Italy, Sicily, Malta, and Sardinia, as well 
as the part of the Alpine region not included in Savoy or the basins of the Rhine, 
Rhone, and Danube. 
Period. 
Maximum. 
Amplitude. 
Annual. 
March, h 
•19 
emi-annual. 
J March, a 1 
I Septemher, a j 
•08 
36. C. W. C. Fuchs, ‘ Statistikder Erdbeben,’ pp. 144-225. 
Duration of record, 1865-1883. Number of earthquakes, 2350. 
Fuchs classifies the Italian earthquakes under three headings : Italy without the 
district round Vesuvius, the district round Vesuvius, and Sicily. The results for the 
