ON THE ORIGIN OF THE FLOCKING HABIT OF MIGRATORY BIRDS
AUTOMATIC PROTECTION OF A LARGE FLOCK
THE DIRECTION ERRORS OF THE INDIVIDUALS OF THE FLOCK ARE AVERAGED
AVERAGING OF THE ERRORS OF FLIGHT DUE TO UNEQUAL WING POWER OF BIRDS
THE NIGHT MIGRATORY CALL OF BIRDS
THE PROTECTIVE FORM OF CERTAIN FLIGHT FORMATIONS
PROBABLE EXPLANATION OF THE ECHELON FORMATION
PROFESSOR C. C. TROWBRIDGE
IT is a noteworthy fact that many species of birds which take long migratory journeys make these movements in large flocks. The same is true to a less extent of the species which makes long daily flights for food. The origin of this flocking habit is not completely explained by the three ordinary theories, which neglect two most important considerations.
THALES, one of the Seven Wise Men, said : Water is the element, the first principle of things. There is no doubt that Thales thought he knew a great deal about water, but even the average man to-day probably thinks he knows much more. Yet, what does he know about it?
PSYCHOTHERAPY may look like a discovery of the twentieth century, but the truly remarkable thing about it is the extent to which it has been practised without being scientifically understood. It has been in the world since the remotest antiquity, nor has it ever left the precincts of civilization.
MANY are disposed to take exception to popular criticism of the courts. This point of view merits consideration because it is entertained by some who are genuinely progressive in spirit as well as by reactionaries. It is the position of those who think the tyranny of the majority is our greatest menace and who look upon the courts as the bulwark not only of property, but of personal liberty.
IN current discussions of country life there seems to be the implication if not the direct claim that the urban population of the nation is relatively too large as compared with country population. Regret is general because boys and girls leave the farm.
THE EFFECTS OF SCHOOL LIFE UPON THE NUTRITIVE PROCESSES, HEALTH AND THE COMPOSITION OF THE BLOOD
STANFORD UNIVERSITY, CALIFORNIA
THE EFFECTS OF SCHOOL LIFE UPON GROWTH
THE EFFECTS OF PROLONGED MENTAL STRAIN UPON THE NUTRITIONAL PROCESSES AND THE COMPOSITION OF THE BLOOD
THE EFFECTS OF SCHOOL POSTURES ON RESPIRATION
THE SCHOOL AS A CAUSE OF MORBIDITY
LEWIS M. TERMAN
THE school is a formal agency devised for the purpose of bringing the child into possession of the main body of our social inheritance—the treasures of knowledge and skill laboriously accumulated by many generations of ancestors. When these treasures were few and pertained mostly to the affairs of immediate self-preservation, there was little danger of overburdening the young in the process of their acquisition.
THE study of the parentage of Beethoven should cause the overzealous eugenist to pause and ponder whether we as yet have sufficient knowledge of the conditions governing heredity for the passing of any save the most tentative laws toward the regulation of lives to be.
JUDGING from what one hears and reads, there is a great variety of opinion as to what sort of a thing the world in which we live really is. Indeed, so diverse are these opinions that one can hardly help wondering if we all do actually live in the same world.
SANITARY science has done so much towards the improvement of public welfare that it may not be surprising to credit the automobile with having contributed to produce some results. The question may be asked in what directions the public health is affected by the constantly increasing use of automobiles and autotrucks.
FOR the naturalist reared in temperate climates the tropics will always be a promised land flowing with biological milk and honey. The medical men have been pioneers in opening up this terra incognita, though they were not the first to enter it.
WORK IN ENGINEERING AT HARVARD UNIVERSITY AND THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY
TRACK SCALE TESTING EQUIPMENT OF THE BUREAU OF STANDARDS
THE corporations of Harvard University and of the Massachusetts Institute of Technology entered into an agreement in January, according to which all work in mechanical, electrical, civil, sanitary and mining engineering will be conducted in the new buildings of the Masachusetts Institute of Technology on the site recently acquired by the institute on the Charles River embankment in Cambridge, not so very distant from the site of Harvard University.