Plagiostomata of the Pacific. Pt. I. Fam. Heterodontidae / by N. de Miklouho-Maclay and William Macleay.

  • Nicholas Miklouho-Maclay
Date:
[1878]
Catalogue details

Licence: Public Domain Mark

Credit: Plagiostomata of the Pacific. Pt. I. Fam. Heterodontidae / by N. de Miklouho-Maclay and William Macleay. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    EXPLANATION OF THE PLATES. REMARKS ON THE ILLUSTRATIONS. Since a faithful figure, in addition to the considerable saving of time (as well to the author as to the reader), which it is the means of effecting, has the advantage over a lengthy description of being demonstrable to the eye, and gives the reader a better idea of the object. I have, as already observed (page 319), re- garded the illustrations as of primary importance. In order to obtain, as far as possible, correct outlines, which is the most important point, I have had recourse to photography, and to a convenient, if somewhat primitive method. This consisted in the preparation of outlines of the object laid on paper ; the natural-size sketches, thus obtained, were then reduced by the orthodox method. To the figures prepared from photographs, the respective scales* are annexed, in order to render possible a rough estimate of the amount of reduction or enlargement, since the method of preparing photographs to scale is yet unknown to me. Lettering Followed Throughout all the Figures (With the Exception op Plate 24). a—Superior oral fold. b—Inferior oral fold. n—External orifice of the nasal groove. n'—C Border of the internal fold of the nasal groove. n—Orifice of the nasal groove in the oral cavity. sp—Spiracle. PLATES 22 and 23. (Heterodontus Phillipi, Bl.) Figs. 1, 2 (pi. 22) 5, 6, 7 (pi. 23).—Young H. Phillipi, 225 mm. in length drawn from a fresh specimen. Fig. 1.—Posterior view of the same. The young animal shewed the peculiar marking, somewhat different from that of [25]