When the months are grouped together according to the seasons, spring, summer, autumn, and winter, we find that in the northern hemisphere the minimum is in summer and the maximum in winter, whilst in the southern hemisphere (giving the proper months corresponding to its seasons) we find two maxima, one at the commencement of winter, and the other at midsummer, whilst the minima are in spring and autumn. [Illustration: FIG. 36.—Curves of Monthly Seismic Intensity (Mallet).] In the following table the difference in the number of earthquakes felt at different seasons is given more in detail. In examining this table, we must remember that for countries like Peru, Chili, and New Zealand, lying in the southern hemisphere, the records given for the months April to September correspond to the winter months of those countries. The Roman numerals indicate the centuries between which the records date. +----------+----------------------------------------+-------+---------+ | | |October| April | | | | to | to | | | | March |September| +----------+----------------------------------------+-------+---------+ | {| 1. Scandinavia and Iceland, xii–xix | =129= | 91 | | {| 2. British and Northern Isles, xi–xix | =123= | 94 | | {| 3. Belgium, France, and Holland, iv–xix| =395= | 272 | | {| 4. Rhone Basin, xvi–xix | =115= | 69 | | {| 5. Switzerland and Rhine Basin, ix–xix | =327= | 205 | | {| 6. Danube Basin, v–xix | =147= | 128 | | {| 7. Spanish Peninsula, xi–xiv | =114= | 87 | | {| 8. Italy, Sicily, Sardinia, and Malta, | | | |Northern {| iv–xix | 650 | 581 | | Regions {| 9. Turco-Hellenic Territory, Syria, | | | | {| Ægean Isles, and Levant, iv–xix | 214 | =222= | | {|10. Northern Zone of Asia, xviii–xix | =46= | 36 | | {|11. Japan (Tokio area), 1872–1880 | | | | {| (small earthquakes) | =213= | 157 | | {|12. Japan B.C. 295-A.D. 1872 (large | | | | {| earthquakes) | 165 | =188= | | {|13. Algeria and Northern Africa | =26= | 20 | | {|14. United States and Canada, xvii–xix | =86= | 48 | | { |15. Java, Sumatra, and neighbouring | | | | { | Islands, 1873–4–7–8 | =194= | 182 | |Central { |16. Mexico and Central America, xvi–xix | 26 | 26 | |Regions { |17. West Indies (Mallet), xvi–xix | 108 | =114= | | { |18. West Indies, xvi–xix | 296 | =343= | | { |19.