Note 35 — ADAM SEDGWICK, M.A., (continued 4)

Further study of my sections has shewn me that the initial independence of these organs is even more complete than might be gathered from the description in my paper (loc. cit.). I now find, as I before conjectured, that they at first correspond exactly with the muscle-plates, there being one for each muscle-plate. This can be seen in the fresh embryos, but longitudinal sections shew it in an absolutely demonstrable manner.