A Treatise on Anatomy, Physiology, and Hygiene: Designed for the Colleges, Academies, and Families

Benjamin B. Mussey and Company, 1854 - 466 σελίδες

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Σελίδα 234 - I counted the perspiratory pores on the palm of the hand, and found 3528 in a square inch. Now, each of these pores being the aperture of a little tube of about a quarter of an inch long, it follows that in a square inch of skin on the palm of the hand, there exists a length of tube equal to 882 inches, or 73i feet.
Σελίδα 236 - Now, the number of square inches of surface in a man of ordinary height and bulk is 2500 ; the number of pores, therefore, 7,000,000, and the number of inches of perspiratory tube 1,750,000, that is, 145,833 feet, or 48,600 yards, or nearly twenty-eight miles.
Σελίδα 393 - MK CROSS. THE OPERA CHORUS BOOK, Consisting of Trios, Quartets, Quintets, Solos, and Choruses, selected and arranged from the most popular Operas of Von Weber, Rossini, Meyerbeer, Bellini, Benedict, Donizetti, Mercadante, Auber, Balfe, Verdi, and Bishop. By EDWARD L. WHITE and JOHN E. GOULD. [ We select the following from numerous Notices of this Work
Σελίδα 236 - To obtain an estimate of the length of tube of the perspiratory system of the whole surface of the body, I think that 2800 might be taken as a fair average of the number of pores in the square inch, and 700, consequently, of the number of inches in length.
Σελίδα 236 - On the pulps of the fingers, where the ridges of the sensitive layer of the true skin are somewhat finer than in the palm of the hand, the number of pores on a square inch a little exceeded that of the palm ; and on the heel, where the ridges are coarser, the number of pores on the square inch was 2268, and the length of tube 567 inches, or 47 feet.
Σελίδα 296 - Precisely analogous phenomena occur when, from intense mental excitement, the brain is kept long in a state of excessive activity. The only difference is, that we can always see what happens in the eye, but rarely what takes place in the brain. Occasionally, however, cases of fracture of the skull occur, in which...
Σελίδα 394 - Collection, the Book is exactly what is wanted at this time; and it will be taken as a favor to the musical public, inasmuch as it cannot fail to be a great acquisition for practice, and a means of creating a better taste. A book got at with such good properties, cannot fail to be well received.
Σελίδα 289 - To those I address, it is unnecessary to go farther, than to indicate that the nerves treated of in these papers are the instruments of expression, from the smile upon the infant's cheek to the last agony of life. It is when the strong man is subdued by this mysterious influence of soul on body, and when the passions may be truly said to tear the breast, that we have the most afflicting picture of human frailty, and the most unequivocal proof, that it is the order of functions which we have been...
Σελίδα 296 - At any time of life, excessive and continued mental exertion is hurtful ; but in infancy and early youth, when the structure of the brain is still immature and delicate, permanent mischief is more easily inflicted by injudicious treatment than at any subsequent period...
Σελίδα 395 - Pestalozzian System of Instruction ; with numerous Exercises, intended to supersede (in part) the necessity of the Black-board. By EDWARD L. WHITE and JOHN E. GOULD. " This Work is just the thing for Schools, Juvenile Concerts, &c. \ consisting of Songs, Hymns, and Chants, with appropriate Music, designed for the use of Common Schools, Seminaries, &c., to which is prefixed the elements of Vocal Music. In many of the Public Schools out of the city, as well as 'in, Music has recently constituted a...

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