SETON — STUDY OF LIFE-HISTORY 
m 
Modes of signalling. 
Voice, various calls and their meaning. 
Song, love songs. 
Property-instinct. 
Hibernation and torpidity. 
Habits in captivity. 
Morality, vice, crime, suicide, etc. 
Enemies, etc. 
Diseases and natural mode of treating, etc. 
Parasites, internal and external. 
Insect pests, and mode of combating. 
Rivals. 
Enemies of other kinds and modes of defeating. 
Age attained, breeding age, etc. 
Death of most, due to what? 
Strange Instances 
Odd partnerships with birds or other creatures. 
Unexplained instances. 
Abnormalities. 
Economics 
Service or relation to man. 
In all cases give name, place and date. The omission of these have 
rendered useless a great number of records. 
While the above seems a logical sequence, it will frequently prove 
better to rearrange it for special animals or materials, but each species 
should be considered under each head, and under other heads sug- 
gested by circumstances. 
JOUENAI. OF MAMMALOGY, VOL. I, NO. 2 
