The growth of the brain : a study of the nervous system in relation to education / by Henry Herbert Donaldson.

  • Donaldson, Henry Herbert, 1857-1938.
Date:
1895
Catalogue details

Licence: Public Domain Mark

Credit: The growth of the brain : a study of the nervous system in relation to education / by Henry Herbert Donaldson. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    PAGE CHAPTER III. Weight Increase of Different Parts of the Body and Increase in Stature ... ... 65 Tissue systems — Weight changes — Significance of changes in proportion—Weights of organs—Number and size of elements—Hypertrophy and hyperplasia— Statistical difficulties—The dead form a series different from the living—Premaxima—Deviation from the mean —Mortality curve—Relation to the statistics of weight — Weight and longevity — Growth an expression of vigour—Stature—Direction of first growth—Rate of increase—Rhythm of growth—Relations of the divisions of the day and year to growth. CHAPTER IV. The Weight of the Brain and Spinal Cord ... 84 Historical—Objects of examination—Interpretation— Constituent elements—Sources of error —Corrections— Reasons for not fusing results—Percentage of body- weight—Determination of brain-weight in the living— Nomenclature— Spinal cord — Encephalon — Subdivi- sions—Grey and white matter—Chemical reaction— Percentage of water—Specific gravity—Weight of adult brain—Proportional development— Weight of the basal ganglia—Weight of spinal cord—Conclusions. CHAPTER V. Increase of the Brain in Weight and Variations of the Cranium in Capacity ... ... ... 103 Table and chart of increase in brain-weight with age—Weight at birth—Weight in the still-born—Early growth—Proportional growth—Spinal cord—Changes in composition—Cessation of growth —Venn's observa- tions—Length and breadth of head—Brain-weight in different races—Cranial capacity —Determination of exact weight. CHAPTER VI. Variations in Brain-Weight ... ... ... 119 Cranial capacity in various races—Giants and dwarfs —Brain-weight in animals—Relation of the weight of the brain to the weight of the body—Nomenclature of