. Bulletin of the Essex Institute. Essex Institute; Natural history; genealogy. 46 THE PHOSPHORESCENT ORGANS tained in the scaleless skin, and are covered by the trans- parent epidermis. This epidermis is of the regular piscine type common in scaleless forms, with the ordinary mucous cells. The epidermis is not, as might be expected, thinner over the organs. In my first sections, from the poor ma- terial, the epidermis had been torn away, and so is not shown in the figures in the plate. Between the epidermis and the muscular tissues below, is a rather thick layer of fibrous connective tissue.
. Bulletin of the Essex Institute. Essex Institute; Natural history; genealogy. 46 THE PHOSPHORESCENT ORGANS tained in the scaleless skin, and are covered by the trans- parent epidermis. This epidermis is of the regular piscine type common in scaleless forms, with the ordinary mucous cells. The epidermis is not, as might be expected, thinner over the organs. In my first sections, from the poor ma- terial, the epidermis had been torn away, and so is not shown in the figures in the plate. Between the epidermis and the muscular tissues below, is a rather thick layer of fibrous connective tissue. The. Section of organ in pleural row, XI60; c = connective tissue capsule; e = epi- dermis; / = fibrous connective tissue; I = lens; p = pigment; r = reflector. organs are entirely embedded in this. An organ consists, primarily, of a more or less spherical "lens," resting on the centre of a circular spicular layer or reflector. This spic- ular layer is thicker and turned up at the edges, and at one side in some of the organs so far as to form a sort of pocket. It is composed of numberless, almost indistinguish- able, spicule-shaped fibres. The "spicules" are not con- fined to the reflector, but some of them are scattered along in the connective tissue, between the organs. This spicu-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Essex Institute. 1n. Salem, Mass. , Essex Institute
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