50 
Pure Paces. 
A 
and 
B 
[(Mulatto). 
First Cross. 
AB 
Mestizo of first blood 
First Beturn Cross 
(Quadroon) 
} 
A 2 B or B 2 A 
Do. of second blood. 
} 
A 3 B or 
B 3 A 
Do. of third blood. 
Second Beturn Cross 
(Octoroon) .. 
Third Beturn Cross 
A 4 B or 
B 4 A 
Do. of fourth blood. 
/ 
\ 
\ 
/ 
\ 
Beturn to pure race A 
or 
B 
The offspring of an octoroon and a mulatto, for example, 
would be designated thus, A 3 B-f-AB ; and the same principle 
would be applied to cases where three races were crossed. 
Another and a simpler, and perhaps preferable, method, 
consists in indicating tlie shares of the several races by 
fractions. Thus the result of a union between a quadroon 
and a zambo (half negro, half Indian) would be represented 
thus, A-f B§ CJ, a quadroon being AJ BJ, a zambo BJ C|. 
1. Are connexions between me races under consideration 
likely to be frequent ? 2. Is the mulatto or mongrel popu¬ 
lation numerous in proportion to the supposed number of 
unions'? 3. Are individuals of the two races more or less 
:uitful in their unions among themselves than in crossed 
unions ? (The Polynesians are said to be less so, the Austra¬ 
lians much more so ; but the latter, probably, usually destroy 
the mulatto infants.) 4. Are inverse crosses (male of inferior 
with female of superior race) equally fruitful with direct 
ones ? Are the children of the first cross as strong, viable, 
and long-lived as those of pure blood in the same country ? 
and do they yield as few examples of blindness, idiocy, &c. ? 
8. What is the relative degree of their fruitfulness among 
themselves and in their crosses with the pure blood ? 7. Do 
they continue fruitful among themselves, without being re¬ 
inforced with crosses of pure blood ? The Liplappens 
(Dutch-Javan mestizos) are said in the third generation to 
yield only females, and these sterile ; but the pure Dutch 
race is also said to become speedily sterile in Java. 8. Do 
