. Figures of remarkable forms of polycystins, or allied organisms, in the Barbados chalk deposit (chiefly from that collected by Dr. Davy, and which he had noticed in a lecture delivered to the Agricultural Society of Barbados, in July, 1846) . eadth, 0055; heightof cupola, .0027. Professor J. Midler says, in allthe flask and bell-shaped Polyeystins, the first joint(glied) of the reticulation begins from the top, andthe number of the increasing links progresses withgrowth in a definite ratio. The links of the lowerpart in this fossil skeleton seem running into eachother irregularly, like dropp
. Figures of remarkable forms of polycystins, or allied organisms, in the Barbados chalk deposit (chiefly from that collected by Dr. Davy, and which he had noticed in a lecture delivered to the Agricultural Society of Barbados, in July, 1846) . eadth, 0055; heightof cupola, .0027. Professor J. Midler says, in allthe flask and bell-shaped Polyeystins, the first joint(glied) of the reticulation begins from the top, andthe number of the increasing links progresses withgrowth in a definite ratio. The links of the lowerpart in this fossil skeleton seem running into eachother irregularly, like dropped stitches in a stocking,or bursting bubbles in a gelatinous film while solid- 3.— A further variation of Podocyrtis Schomburgkii, asshewn on plate I, fig. 3. 4.—A modification of fig. 2, on plate I. 4 & 6.— Tlie reticulations progressing further towards the Ladder or Lattice-shape. In fig. 6, the inner netis very plainly seen, its reticulations are also square,with quarter-inch objective magnifying power used,about 470 linear. Springfield, Barbados. In anotherslide is a broken-oft top of one of these Ladder-Pyramids, with the narrow neck sv^elling out intothe surmounting ball nucleus (?) WlNDEEMiRE : fBINIED BY JOHK PLATE
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Keywords: ., bo, bookcentury1800, bookdecade1860, bookidfiguresofremarka00bury
