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Heredity has limits to its range of influence as well as any other cause for crime, and it may be found that there are certain fears which it can never invade. For instance, one sphere wherein its influence is manifestly great, is in the structure of the nervous, osseous, muscular, circulatory and vascular systems. Again, what is more common than to find intellectual ability running in families?
The remarkably frequent occurrence of one or more minute stars in the close vicinity of "planetary" nebulæ led him to infer their dependent condition; and he advised the maintenance of a strict watch for evidences of circulatory movements, not only over these supposed stellar satellites, but also over the numerous "double nebulæ," in which, as he pointed out, "all the varieties of double stars as to distance, position, and relative brightness, have their counterparts."
By turning the screws to which the pads are attached the desired amount of pressure can be applied to the arteries, and the apparatus can be worn for any length of time by the patient. Where, however, the headache is of manifestly nervous origin and uncomplicated by any especial circulatory derangements, I have never been able to achieve notable results with this method.
Breathing is an animal function and here we cannot compete with birds; locomotion is an animal function and here we cannot equal quadrupeds; we have made no notable advance in our circulatory, digestive, renal, or hepatic functions. Even as regards vision and hearing, there are many animals that are more keen-sighted than man, and many that are capable of hearing sounds that to him are inaudible.
But the young salamander, like all amphibia, breathes by gills, its skeleton differs greatly from, and is far weaker than, that of the lizard, and there are important differences in the circulatory and other systems. Moreover, practically all amphibia differ from all reptiles in these respects.
For example, Goodale castrated a brown leghorn cockerel twenty-three days old and dropped pieces of the ovary of a female bird of the same brood and strain into the abdominal cavity. These adhered and built up circulatory systems, as an autopsy later showed.
There were eighteen eye cases and nineteen ear cases, three nose, and eighteen of the throat. Of the circulatory system the total was sixty-eight of which twenty-two were heart trouble and thirty-one hemorrhoids brought on by exposure. There were eighty respiratory cases, ninety-three digestive cases, of which sixteen were appendicitis and thirty-two were hernia.
Nancy, pale and helpless, was sitting on one side of a resplendent circulatory system drawn to illustrate the subtleties of the designer's art. "You will observe, ladies," Leofwin was saying in his purest Suffolk manner, "that shading is done with the crayon well back, like this." He made a few swift lines on the corner of the System and looked up with his bright, inquisitive smile.
Nevertheless a patient who is a habitual user of tobacco and has circulatory failure noted more especially about or during convalescence from a serious illness, particularly pneumonia, may best be improved by being allowed to smoke at regular intervals and in the amount that seems sufficient.
#Leucocytosis.# Most bacterial diseases, as well as certain other pathological conditions, are associated with an increase in the number of leucocytes in the blood throughout the circulatory system. This condition of the blood, which is known as leucocytosis, is believed to be due to an excessive output and rapid formation of leucocytes by the bone marrow, and it probably has as its object the arrest and destruction of the invading organisms or toxins. To increase the resisting power of the system to pathogenic organisms, an artificial leucocytosis may be induced by subcutaneous injection of a solution of nucleinate of soda (16
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