XXIX. Investigations into the structure and development of the scales and bones of fishes
XXIX. Investigations into the structure and development of the scales and bones of fishes
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二十九。
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通讯作者：
W. Williamson
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作者：
W. Williamson
1849年，我有幸向皇家学会提交了一本关于鳞屑发生的回忆录，在这本回忆录中，我主要关注硬鳞鱼和扁鳞鱼的表皮牙齿和鳞片的结构和生长。自从那本回忆录完成以来，从职业生活的积极职责中可以抽出的很大一部分闲暇时间，都用于与同一主题有关的更广泛的调查。在此期间，我做了大量的属于M.阿加西的摆线目和栉形目，以及他的Ganoid目的Ostraciont家族：调查的结果使我相信，这些生物体的结构迄今为止还非常不完善，我并不奇怪它们的起源和发展一直处于相当模糊的状态。我在上一本回忆录中列出了在我之前参与这项调查的各种作家的名单。因此，有必要选择两位最现代的观察家，并注意他们各自的观点，以便我们可以理解我最近的观察与我的前辈们在研究中的关系。Mandl和M.阿加西
In 1849, I had the honour of laying before the Royal Society a memoir on Lepidogenesis, in which I chiefly directed attention to the structure and growth of the dermal teeth and scales of Ganoid and Placoid fish*. Since the completion of that memoir, a large proportion of such leisure hours as could be snatched from the active duties of professional life, have been devoted to a still wider range of inquiry connected with the same subject. During the interval, I have made a great number of sections and other microscopic preparations of scales belonging to M. Agassiz’s Cycloid and Ctenoid orders, as well as of the Ostraciont family of his Ganoid order: the results of the investigation having convinced me, that the structure of these organisms has hitherto been very imperfectly known, I am not surprised that their genesis and development have been involved in considerable obscurity. A list of the various writers who have preceded me in this inquiry, was given in my last memoir. From this, it will be necessary to select two of the most modern observers, and to notice what their respective views are, in order that we may comprehend the bearing of my more recent observations upon those of my predecessors in the study: these are, M. Mandl and M. Agassiz.