In considering the case of Porto Rico, we find that the Island contains 8,317 square kilometers of land. The estimated population at the present time is 1,200,000. This gives about 140 persons to the square kilometer as compared with 72 persons in France, 237 persons in Belgium, and 252 in Saxony. If the productive ability of the soil of Porto Rico is as great as that of Belgium and Saxony, we must conclude that Porto Rico is not overpopulated. If for any reason it is less, then the extent of overpopulation increases directly as the soil grows less in productive ability.
Porto Rico has about ten times as many inhabitants per square acre as the average throughout the United States; but the conditions of climate do a great deal to equalize this difference. In the first place, the soil is available in Porto Rico for the production of crops throughout the twelve months of the year, whereas in parts of the United States and in northern Europe the soil is usable for only a portion of the year on account of its unproductive condition during the winter months. Another matter that must be taken into consideration in the question of overpopulation, is the severity of the climate. Where the climate is severe, the country will maintain in comfort a much smaller population than where the climate is as friendly to the human race as we find it in Porto Rico.
Of the population of Porto Rico in 1910, about 75 per cent lived in communities that had less than 500 inhabitants, showing conclusively that the great majority of the people of Porto Rico should be classified as rural inhabitants and that the problems which affect the rural people of Porto Rico are the problems which would affect, to a great extent, the entire Island. Only two cities in the Island have a population of more than 25,000, while only 30 would fall under the head of urban territory, that is, towns which have a population of 2,500 or more.
The rate of increase of population in Porto Rico is far in excess of the rate of increase in the United States, and this is one of the things that must be taken into consideration in considering the question of overpopulation. In the United States the rate of increase among the class of people whose salaries range from $700 to $2,500 is from ten to twelve per thousand. In Porto Rico, the rate of increase is about twenty per thousand.
The following table shows a comparison between the birth rate, death rate, and rate of increase in the United States and Porto Rico, the figures given representing the birth and death rate for every thousand of the population in each country.
| United States | |||
| Birth rate | Death rate | Increase | |
| Poor Class: | 35 to 40 | 25 to 35 | 5 to 10 |
| Intermediate class: | 25 to 30 | 15 to 18 | 10 to 12 |
| Well-to-do class: | 12 to 18 | 12 to 15 | 4 to 6 |
| Porto Rico (1914-15) | |||
|---|---|---|---|
| Birth rate | Death rate | Increase | |
| 39.12 | 19.72 | 19 to 20 | |
In order to maintain the population of a country, there must be about 400 children between the ages of one and five years for every thousand women between the ages of fifteen and forty-five. The following table shows how Porto Rico compares in this respect with other countries.
| United States | 492 | children | per | thousand | women |
| France | 409 | " | " | " | " |
| Germany | 535 | " | " | " | " |
| England | 429 | " | " | " | " |
| Sweden | 522 | " | " | " | " |
| Porto Rico | 725 | " | " | " | " |
Thus we see that the rate of increase of the population of Porto Rico is much greater than that of the United States. When we take into consideration the advancement being made in sanitary science in Porto Rico and in the elimination of disease, as well as the increased facilities for caring for sickness, we may expect that the rate of increase here will be augmented each year.
The general opinion is that Porto Rico is so thickly populated that a crisis is inevitable, unless some means is found for remedying the present situation. It does not seem, however, that we are justified in coming to such a conclusion when we consider the much more densely populated countries of Belgium and Saxony. Increased production of the soil due to intensive agriculture, and modern methods of farming, as well as the breaking up of the land into small farms, have been the means of taking care of the vast populations of European countries where climatic conditions are not as favorable as they are in Porto Rico. Of the total acreage of Porto Rico about 94 per cent is in farms, and we find that only 30,000 people are directly dependent upon these farms for their support. Of the total number of acres included in farm land, about 75 per cent is improved and under cultivation, so that there is still about one quarter of the land that can be devoted to agriculture when it has been connected with markets, or by other means rendered available for this purpose. There are in Porto Rico more than 58,000 farms, 46,779 of which are operated by their owners. These, in the great majority of cases, are small farms and are of the kind which bring the greatest amount of benefit to the Island. Some 10,000 farms are operated by tenants, and these farms also are usually small.