school, notwithstanding the fact that about half of their population is colored.

That there is a rough correlation between the rank of the departments in the order of school attendance and in the order of literacy, appears from the following lists:

School attendants classified by sex.-The following table gives the facts for Porto Rico by sex:

The proportion of males attending school is much higher than that of females, and so great a difference in this respect is unusual.

School attendants classified by age. In the following table the proportion of school attendants in the several age classes is given:

The one noticeable feature of the preceding table is the relatively small proportion of children between 5 and 10 years of age who were attending school, and the sharp maximum in the proportion for the age period 10-14. In Cuba the proportions of children of these two age periods attending school are more nearly alike.

School attendants classified by race.-The following table gives the facts regarding school attendance for Porto Rico, by race:

Number and per cent of school children, by race.

The proportion of colored children attending school is slightly less than the proportion of white children, but the difference between the two races in this regard is comparatively slight.

In the following table the proportion of school attendants for each race is given by departments:

The proportions of school attendants in the several departments do not vary for the two races in the same way. In Arecibo both races have few children in school and in Mayaguez both have many, but in Aguadilla, relatively to the other departments, there are few white and many colored school children, and in Guayama there are many white and few colored. Hence school attendance among the two races must be influenced by somewhat different conditions.

LITERACY AMONG PERSONS OVER TEN YEARS OF AGE.

[See Tables XVII and XVIII.]

It is hardly accurate to include infants with the illiterate, even though they can not read, for the word "illiterate" implies that the person has advanced at least out of infancy into childhood. Hence it is the usual practice for a census in gathering information on this topic to disregard all children under a specified age. This has not been done. in the censuses of Spain or of the Spanish colonies, but in American census practice all children under ten are omitted from the illiteracy tables. Such a classification is made in the present census of Porto Rico, and will be regarded in the following discussion. For reasons already explained, only two classes will be considered-those who are