432 THE AMERICAN NATURALIST.  [Vor. XXXIV. 
ductions from microscopic sections. ‘These weapons are then clas- 
sified in several groups, according to their shape. Dr. Wilson 
believes many of the * humpbacks " were not rejects, as has been 
supposed, but that they were intentionally chipped into this form to 
be used as knives. Again, many of the implements having the form 
of arrow and spear points were intended to be used as knives. 
F. R. 
The Report of the Commissioner of Education for 1897-98 con- 
tains a vast amount of information relating to educational interests 
in America and in foreign countries. A chapter is devoted to edu- 
cation in Cuba, Porto Rico, and the Philippines. Besides the edu- 
cation of the older civilized countries, that of Australia, Tasmania, 
and New Zealand, of India and various South American republics, 
is considered. Of special interest to anthropologists is the chapter 
upon psycho-physical and anthropometrical instruments of precision 
in the laboratory of the Bureau of Education. Many of the ninety- 
two illustrations represent new pieces of apparatus. Dr. Arthur 
MacDonald contributes an exhaustive experimental study of Wash- 
ington school children (pp. 989-1140). ‘The investigation included 
a special study of 1.074 children and the anthropometrical measure- 
ment of 16.473 white and 5.457 colored children. His conclusions 
as to the children specially studied were : 
1. * Dolichocephaly, or long-headedness, increases in children as 
ability decreases. A high percentage of dolichocephaly seems to be 
a concomitant of mental dullness. 
2. Children are more sensitive to locality and heat on the skin 
before puberty than after. 
3. Boys are less sensitive to locality and more sensitive to heat 
than girls. , 
4. Children of the non-laboring classes are more sensitive to 
locality and heat than children of the laboring classes. 
5. Colored children are much more sensitive to heat than white 
children. This probably means that their power of discrimination 
is much better, and not that they suffer more from heat." 
In Dr. MacDonald's conclusions from study of the larger series of 
children we find the surprising statement that “in colored children 
brightness increases with age — the reverse of what is true in white 
children." 
An educational directory concludes Part I of Vol. I. F. R. 
