. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. A, the fore limb of the whale ; B, the paws of the sloth—immature and adult. exactly to the number of those nuclei from which the metacarpo-phalangeal series of the fore-finger of B fg. 484. is formed. PROP. XLII. The stcrno-costo-vertcbral quantity is a proportional of the dorso-vcntral quantity.—Every lesser form which manifests an identity with part of a greater form proves this, and nothing completely truthful but this, viz. that the lesser viewed in comparison with the greater, owes its present condition solely to t
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. A, the fore limb of the whale ; B, the paws of the sloth—immature and adult. exactly to the number of those nuclei from which the metacarpo-phalangeal series of the fore-finger of B fg. 484. is formed. PROP. XLII. The stcrno-costo-vertcbral quantity is a proportional of the dorso-vcntral quantity.—Every lesser form which manifests an identity with part of a greater form proves this, and nothing completely truthful but this, viz. that the lesser viewed in comparison with the greater, owes its present condition solely to the fact of its having been metamorphosed from such another quantity as the greater form. In the spinal axis of most fishes Nature develops a series of forms like_/%. 487., which I call dorso-ventral, the dorsal half (1, 2, 3, 4) being quantitatively equal to the ventral half (1, 2,3, 4) ; and the distal extreme (1, 1) of either half being terminated by fin processes, the palms (6,6). In the spinal axis of terrestrial animals Nature presents a series of proportionally diverse forms, such as vertebral quantities, &c. ; the dorsal sides of which are not quantitatively equal to the ventral sides, and these latter sides being still further struck proportionally diverse to each other. The difference be- tween the spinal series of the terrestrial animal and that of the aquatic animal being a quantitative difference simply, forasmuch as the former are identical with some element- ary parts of the latter, I here affirm that the lesser spinal quantity of the terrestrial animal is a proportional struck by metamorphosis from the greater spinal quantity of the aquatic animal. Let the comparative anatomist follow me in my remarks upon the skeletal axis of the fishes, and he will find that my explana- tion of the natural law of formation shall not outstep the demonstration which Nature her- self offers as sell-evidently truthful. I point to a segment (fg. 487.) of the f
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