It is a sad fact that at the present day the best energies of man reach maturity possessed of insufficient lungs, and consequently liable to break down in health, energy and strength.

A large part of the studious class, such, for instance, as the teachers, are at the present day devoting themselves to a form of work which is not a pulmonary exercise, but pulmonary destruction.

We must remember that healthy exercise of the lungs should take place in the open air, and consists of indrawn breaths deep enough to dilate the air-chambers. Instead of this, the teacher speaks, which means that he makes forced expirations, during many hours in an enclosed environment and in an assemblage of persons who, for the most part, are far from clean. The bacillus of tuberculosis finds in the teacher its favourite camping-ground. In fact, statistics indicate that the maximum mortality from tuberculosis is among teachers; higher even than among nurses. It is really distressing to think of the ignorance of hygiene in which our schools are even yet steeped, so that they seem forgetful of the body, in their pursuit of a spirit that eludes them and that, as a matter of fact, is not being educated in anything approaching a rational manner.

When we enter a class-room, we see rows of benches constructed like orthopedic machines, to the end that the vertical columns of the pupils shall not be distorted during their enforced labour; and the thought arises: this is the spot in which the teacher becomes a consumptive for the sake of transforming the children into hunchbacks. What is the reward of so great a sacrifice? What sort of a preparation in ideals and in character are they giving to the new generations through such disastrous means? What are the obstacles which they are being taught, through so much suffering, to surmount and to conquer? What, in short, is the spiritual gain achieved at the cost of so great an impoverishment of the body?

The answering silence that greets these questions indicates that we have a great mission to accomplish.

Anthropological studies made upon pupils have demonstrated that school-children rarely attain a sufficient chest development. I also have made my modest contribution, proving that the brightest scholars, the prize-winners, etc., who, as a general rule, also enjoy an advantage in social position, have a narrower chest measure. Among the children that are recognised as the brightest in their classes, I have been able to distinguish two categories: those who are exceptionally intelligent, and those who are exceptionally studious; the former have a better chest development than the latter.

Signorina Massa, one of my pupils at the University, in the course of kindred studies made among pupils of a uniform social grade (the poorer classes) observed that the best and brightest scholars, etc., have a chest circumference and a muscular strength notably inferior to the children who are not studious. There can be no doubt that an assiduous application to the study table impoverishes the organism and above all impedes the normal development of the thorax. This fact has a really overwhelming importance. Study the tables of mortality in Italy for infective diseases, i.e., those diseases in which mankind meets the assault of the microscopic invader either with a strong constitution, or with one already predisposed to defeat. The most dreaded diseases, such as diphtheria, typhoid, measles and scarlet fever are all grouped together under a mortality oscillating between five and twenty-five thousand deaths a year. But bronchitis and pneumonia each cause a mortality that ascends to between seventy and eighty thousand deaths; in this group it is evident that we must take into consideration, not only the infected environment, but also the organic predisposition. Every man and woman has been prepared, by their years in school, to have in the form of a narrow chest and an insufficient development of the organs of respiration, a locus minoris resistentiæ. Whoever talks of the war against tuberculosis ought first of all to investigate the school and its pedagogic methods.

Anthropological Aspect. Growth of the Thorax.—In the course of its growth the thorax undergoes an evolution, not only in itself, but also in its relation to the vertebral column.

Fig. 124.