246 G. H. KNIBBS. 



(ix.) Suicide is on the increase for the world generally 

 but in decreasing ratio. It is decreasing in Australia. 



(x.) It may be stated that there is a fairly well marked 

 increase in the frequency of suicide in Prussia for the ages 

 15 to 25, viz., the intensive educational period of life. The 

 data have however, not been given in the paper. 



(xi.) In Australia frequency of suicide at first increases 

 with age, attaining with men a maximum at about age 62, 

 after which it declines. With women it never attains in 

 the western civilised world or in Australia a comparable 

 magnitude to the frequency with men, but exhibits in a 

 less marked way the tendency to increase with age to a 

 limit and then to decline. 



(xii.) The western civilised world stands in startling con- 

 trast with the east, and especially with India in this 

 respect, where female suicide preponderates. Even in 

 Japan the frequency of female suicides is large compared 

 with any European country. 



(xiii.) The mode of suicide shews considerable constancy, 

 and is apparently influenced by physical conditions. 



