INTRODUCTION TO SOCIOLOGY
227
Each species occupies a region the limits of which are fixed by natural obstacles, such as the sea, deserts, and mountains, or by climatic conditions. Plants sometimes surmount these first obstacles, thanks to their natural means of dissemination, or even
ERRATUM.
Through an oversight, the table of suicides in Belgium by sexes, from 1836 to 1900, appearing on p. 79 of the July number of this JOURNAL, in M. De Greef's article on "Introduction to Sociology," contains several mistakes. Columns i and 2 ("Male" and "Female") have been transposed, and some of the numbers, especially in the last column, are erroneous. A corrected table is printed below :
Male
Female
Total
General Increase
Increase for Females
1836-30 . .
?
?
178
100
?
1840-49
I9<>
47
242
138
100
1850-60
225
CI
276
TQC
108
1861-70
?
?
263
I4Q
?
1871-80
373
68
441
248
143
1881-90
MI
107
658
370
227
1891
648
1 2O
760
432
2";";
1892
673
122
70 1 ;
447
2^7
1893 . .
746
1 19
825
483
e
1894
6Q3
146
839
471
310
1895 . ,
660
I52
812
41:6
12$
1896
668
141
809
4^4
300
1897
607
14"!
751
422
30Q
1898
673
1=50
823
462
318
i8o<3 . .
643
138
781
430
203
1900
658
128
786
447
272
1891-1900
613
136
740
421
288
surface and configuration. We see that it is the same for the several varieties of the human species, not only by reason of their
