﻿SOLAR 
  PHYSICS 
  AND 
  LOCUST 
  INCREASE. 
  

  

  71 
  

  

  Table 
  I 
  Mean 
  seismic 
  {earthquake 
  and 
  volcanic) 
  periods 
  and 
  suyi-spot 
  cycles, 
  auroras, 
  pro- 
  

   gressive 
  E. 
  and 
  W. 
  deviation 
  in 
  the 
  magnetic 
  needle, 
  and 
  locust 
  periods 
  in 
  Europe. 
  

  

  

  'a 
  rtj 
  

  

  i.g^ 
  

  

  

  i'" 
  

  

  

  

  •S^ 
  

  

  'S 
  Ztf 
  

  

  

  t3 
  

  

  

  

  II 
  

  

  11^ 
  

  

  

  aa 
  

  

  H 
  3 
  

  

  

  

  2 
  "^ 
  

  

  liods 
  

   nimo 
  

  

  ca. 
  

  

  03 
  

  

  c3 
  a 
  . 
  

  

  Eemarks. 
  

  

  

  

  <» 
  c 
  P.-J:; 
  

  

  

  o 
  a 
  p^ 
  

  

  

  

  5 
  ^ 
  

  

  p-y 
  o 
  S 
  

  

  4) 
  

  

  oo 
  

  

  

  

  li 
  

  

  9-SSS 
  

   2 
  gw-ii 
  

  

  1 
  

  

  

  

  

  s« 
  

  

  S 
  

  

  P 
  

  

  [H 
  

  

  

  re"Vf 
  auroras 
  -^ 
  

  

  M 
  

  

  ( 
  -1878) 
  

  

  5 
  

   6 
  

  

  1881 
  

  

  

  

  m 
  

  

  (1875-1872) 
  

  

  1876 
  

  

  Locusts. 
  

  

  

  M 
  

  

  (1871-1870) 
  

  

  3 
  

  

  1870 
  

  

  

  

  m 
  

  

  (1868-1865) 
  

  

  7 
  

  

  1867 
  

  

  Locusts. 
  

  

  

  M 
  

  

  (1862-1858) 
  

  

  5 
  

  

  1860 
  

  

  Locusts. 
  

  

  

  111 
  

  

  (1855-1851) 
  

  

  7 
  

   5 
  

   6 
  

   4 
  

   4 
  

   6 
  

   7 
  

   6 
  

   6 
  

  

  1855 
  

  

  

  

  M 
  

  

  m 
  

  

  (1851-1846) 
  

   (1844-1841) 
  

  

  1848 
  

   1843 
  

  

  I 
  Locusts. 
  

  

  I 
  

  

  M 
  

  

  (1839-1836) 
  

  

  1837 
  

  

  

  

  m 
  

  

  (1833-1831) 
  

  

  1833 
  

  

  -) 
  

  

  

  M 
  

  

  (1830-1828) 
  

  

  1829 
  

  

  > 
  Locusts. 
  

  

  

  m 
  

  

  (1825-1820) 
  

  

  1823 
  

  

  5 
  

  

  

  M 
  

  

  (1821-1816) 
  

  

  1816 
  

  

  

  

  m 
  

  

  (1812-1809) 
  

  

  1810 
  

  

  

  

  **M^ 
  

  

  

  

  

  

  M 
  

  

  (1806-1801) 
  

  

  6 
  

  

  1804 
  

  

  > 
  Locusts. 
  

  

  

  m 
  

  

  (1798-1795) 
  

  

  10 
  

   3 
  

  

  1798 
  

  

  

  M 
  

  

  (1792-1788) 
  

  

  1788 
  

  

  

  

  m 
  

  

  (1785-1783) 
  

  

  1784 
  

  

  

  

  M 
  

  

  (1781-1779) 
  

  

  1778 
  

  

  

  Many 
  auroras.. 
  { 
  

  

  m 
  

  

  (1776-1775) 
  

  

  g 
  

  

  1775 
  

  

  

  

  M 
  

  

  (1773-1770) 
  

  

  3 
  

   5 
  

  

  I 
  

  

  ? 
  

  

  1769 
  

  

  

  

  m 
  

  

  (1768-1775) 
  

  

  1766 
  

  

  

  

  M 
  

  

  m 
  

  

  (1762-1759) 
  

   (1755-1754) 
  

  

  1761 
  

   1755 
  

  

  > 
  Locusts. 
  

  

  

  M 
  

  

  (1752-1759) 
  

  

  1750 
  

  

  Locusts. 
  

  

  

  - 
  m 
  

  

  (1746-1742) 
  

  

  1744 
  

  

  

  

  M 
  

  

  (1739-1735) 
  

  

  1737 
  

  

  

  

  m 
  

  

  (1730-1729) 
  

  

  I 
  

  

  6 
  

   6 
  

   5 
  

   5 
  

  

  1730 
  

  

  Locusts. 
  

  

  

  M 
  

  

  (1726-1724) 
  

  

  1724 
  

  

  

  

  m 
  

  

  (1721-1717) 
  

  

  1720 
  

  

  

  

  M 
  

  

  " 
  (1715-1713) 
  

  

  1714 
  

  

  Locusts. 
  

  

  

  m 
  

  

  (1708-1706) 
  

  

  1708 
  

  

  

  I 
  

  

  M 
  

  

  (17(13-1702) 
  

  

  1703 
  

  

  

  

  m 
  

  

  (1699-1696) 
  

  

  7 
  

   3 
  

  

  3 
  

   7 
  

   4 
  

  

  10 
  

   3 
  

  

  1698 
  

  

  

  - 
  

  

  M 
  

  

  m 
  

  

  (1693-1691) 
  

   (1689-1685) 
  

  

  1691 
  

  

  1688 
  

  

  > 
  Locusts. 
  

  

  

  M 
  

  

  (1683-1681) 
  

  

  1681 
  

  

  

  

  m 
  

  

  (1679-1677) 
  

  

  1678 
  

  

  

  

  M 
  

  

  (1673-1671) 
  

  

  1671 
  

  

  

  Few 
  auroras 
  < 
  

  

  rn- 
  

  

  (1668-1664) 
  

  

  1667 
  

  

  

  

  j 
  M 
  

  

  (1662-1654) 
  

  

  1657 
  

  

  1 
  

  

  

  1 
  m 
  

   1 
  M 
  

  

  (1654-16.53) 
  

   (1650-1647) 
  

  

  6 
  

  

  Q 
  

  

  16t)4 
  

  

  1648 
  

  

  > 
  Locusts. 
  

  

  

  m 
  

  

  (1646-1&43) 
  

  

  t) 
  

  

  5 
  

   5 
  

   7 
  

   3 
  

   7 
  

   5 
  

   5 
  

   5 
  

   6 
  

   4 
  

   10 
  

   6 
  

  

  1645 
  

  

  J 
  

  

  

  M 
  

  

  (1641-1639) 
  

  

  1640 
  

  

  

  . 
  

  

  m 
  

  

  (1636-1633) 
  

  

  1635 
  

  

  

  

  M 
  

  

  (1628-1626) 
  

  

  1628 
  

  

  

  

  TTi 
  

  

  (1626-1624) 
  

  

  1625 
  

  

  

  

  M 
  

  

  (1620-1617) 
  

  

  1618 
  

  

  

  

  m 
  

  

  (1613-1612) 
  

  

  1613 
  

  

  Locusts. 
  

  

  

  M 
  

  

  (1610-1606; 
  

  

  1608 
  

  

  

  

  m 
  

  

  (1603-1600) 
  

  

  1603 
  

  

  

  

  M 
  

  

  (159^-1596) 
  

  

  1.597 
  

  

  

  

  m 
  

  

  (1593-1586) 
  

  

  1593 
  

  

  

  

  M 
  

  

  m 
  

  

  (1584-1581) 
  

  

  1583 
  

  

  

  

  (1.578-1576) 
  

  

  7 
  

   6 
  

  

  n 
  

  

  1577 
  

  

  

  

  M 
  

  

  (1574-1.571) 
  

  

  1570 
  

  

  Locusts 
  ? 
  

  

  Many 
  auroras 
  { 
  

  

  m 
  

  

  (1566-1.563) 
  

  

  1564 
  

  

  

  

  M 
  

  

  (1561-15,58) 
  

  

  6 
  

  

  I 
  

  

  5 
  

   7 
  

   6 
  

   10 
  

   6 
  

   6 
  

   4 
  

   6 
  

  

  i 
  

  

  1558 
  

  

  

  • 
  

  

  m 
  

  

  (1556-1553) 
  

  

  1555 
  

  

  Locusts. 
  

  

  

  M 
  

  

  (1.551-1548) 
  

  

  1549 
  

  

  

  ^ 
  

  

  '/<■» 
  

  

  (1546-1542) 
  

  

  1544 
  

  

  Locusts. 
  

  

  

  M 
  

  

  (1542-1536) 
  

  

  1537 
  

  

  

  

  m 
  

  

  (1534-1528) 
  

  

  1531 
  

  

  Locusts. 
  

  

  

  ! 
  M 
  

  

  (1522-1519) 
  

  

  1521 
  

  

  

  

  m 
  

  

  (1516-1513) 
  

  

  1.515 
  

  

  

  

  M 
  

  

  (1510-1509) 
  

  

  1,509 
  

  

  

  

  m 
  

  

  (1507-1503) 
  

  

  1505 
  

  

  

  

  M 
  

  

  (1501-1495) 
  

  

  1499 
  

  

  

  