28° oe REPORT—1858. 
Taste XX.—Résumé of the Earthquakes of Europe, and of the adjacent 
parts of Asia and of Africa, from A.D. 306 to 1843. 
With date of 
Earthquakes with date of Day or Month. Sainoniaaades 3 af 
E e's 
Century. : & B18 ee S = § |S °| Total. 
B/E 3 3 B/2/2| 2.8 | od las 
mu 3 na r= oF 2 oO 
S\s (Sia) e)¢ 2\/s|8|/28/8| 88) 28 ex 
SIRE S| el Ssle| Pi ai2/e13| 82 | be 
SIS/Sl|eliS/lsiBslseila;rel/e/2z <q an 
Sis isl(flSlSl[S5i4]alol4 lal =e n 
ae | ee | a | mn | ee re | | a | ee || 
INP aeons weal etesliecna| hea eae eee 1 Ee ee | Mets aleat| a ns Lae 21 
We nbeco 1 asc ala 2) 1 Dhl peel vane laa’ atolls 25 
(Vlas ate Peters RP 2g N16 MRSS 11 2 2) ais ea | 11 31 
VDE eae. os Le Pea eae ie i fon ke 2 I soa Soe 6 10 
YUL Fe apap pi Yi eb 8 |r bol oe lien Si lsoa 3 11 
ID Su seradecis Ale eB re eel ie aan es 1 ha be) a 1 | 10 36 
ereae sees Dy gsish ny eae lige S| ee Dealer oe (es feed pe  eI hea 8 17 
SEES 1} 4 5) 1) 2] 1 2 2) 4) 38) 3} 8} 1 19 51 
S11 Rae co] PIPE VRE 2 | PR a ee aa 34 68 
PORED, ic asees Jie? Pt Vac Vee fc ee Ie | 2) 5) 4 27 55 
20 I gu eee bf ier fu Me Fé a UUs a 2 | 22 58 
SG Goes seh eT al RA MA sai Dh se a a Sg ae Leah a 41 
CVLeiine. ces 10) 5) 6 8 10) 4) 2} 3) 9; 3} 6 10 38 31} 110 
OVI ecese 21| 16) 15] 13} 6} 9) 10) 3) 14; 3/10, 17; 1 1 | 41] 180 
XVIII. ...| 77) 58] 45] 52] 36] 49) 49) 49| 32) 62) 55| 62) 14 4 | 21) 660 
BN anice 99 100| 90) 59} 55] 55) 74) 78) 72| 92) 60 78 6 1 6| 925 
Total .../228/189/172)147)126)131/148)147|147/176|148 202) 48 ll 279 | 2299 
Winter Spring Summer | Autumn 
589 404 442 526 
Autumn and winter still preponderate thus for entire Europe. As regards 
the “ critical periods” of the year, the results are— 
For XIX. Century. For the whole period. 
Winter solstice ...... rhe wots e 253 
Spring equinox .....26.-000006s 151 170 
Summer solstiees.!j2. 0, goss ds. 129 150 
Autumnal equinox ........... - 164 159 
and for the half year, and XIX. century only— 
Autumn and Winter............ 527 
Spring and Summer ............ 394 
and for the whole period of nearly 154 centuries— 
Autumn and Winter...... «dasiee ls A 165 
Spring and Summer ...... imawass 190 
or about as 1 : 0°75. 
The mean annual number of earthquakes in Europe, &c., deduced from 
the data of the ten years between 1833-1842, while it was everywhere at 
peace, and intelligence well conveyed, Perrey finds to be nearly 33 per 
annum. He considers that one-fifth more may probably have occurred 
that have not come to his knowledge, so that the mean annual number 
would be 40, or between 4 and 5 per month. 
The remainder of this memoir is uccupied with remarks upon very nu- 
merous and interesting secondary phenomena, recorded of the earthquakes 
referred to in the catalogue discussed, 
