. Electro-physiology . FIG. 254.—Raja clamta. Successive stages in the development of an electrical plate from a cross- striated muscle-fibre. (Engelmann.) already exist, or upon the widening of the inter-fibrillar spaces. Later on, in the perfected organ, no fibrillated structure of the lamelUe can be detected. If the optical alterations in the series of strata during the development of the electrical are compared with those seen in vigorous, physiological contraction, there are striking coincidences, as pointed out by Engelmann. On the one hand, the arimetabolous

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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublisherlondonmacmillan