File:The Quarterly journal of the Geological Society of London (1917) (14781728552).jpg

Identifier: quarterlyjourna731917geol (find matches)
Title: The Quarterly journal of the Geological Society of London
Year: 1845 (1840s)
Authors: Geological Society of London
Subjects: Geology
Publisher: London (etc.)
Contributing Library: Smithsonian Institution Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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a=First suture X 28.h= Second suture X 28.c= Seventh suture X 28 d = Sutm-e at 1; whorls X 28. j; = Suture at 4; whorls X 8.e = Suture at 2f whorls x 15. /)= Suture at h^ whorls X 4./= Suture at 3f whorls X 12. / = Sutiu-e at 6f whorls X 2, i Fig. 10.—Series of septal sections made from one of the latestsepta of the Dactvlioceras/y/^r*?^/ in PL II, ff/- ^- X 2.
Text Appearing After Image:
(The horizontal lines indicate the position of the datum-plane. The brokenlines indicate the positions of the ribs on the original surface. Theletters correspond Avith the numbers of fig. 11, p. 44.) 44 PROF. H. H. s^^I^^EETO^ axd me. a. e. TErEMAX (vol. Ixxiii, Passing outwards from this, the sections show ever more clearlydetined indications of folding mitil at section e (tig. 10, p. 43) thevare distinct enough to jjermit of comparison with the second suture(9 h, p. 42). Such comparison shows that, except for the flatteningof the features, all essential characters of the latter are to be seen.If it Avere not for the enlargement of the first lateral saddle, thefifth septal section (fig. 10 e) would be identical with the secondsuture (fig. 9 &). This discrepancy is slightly rectified in the sixthsection (Hg. Vdf). Fig. 11.—Section of whorl (x6) alonrj the datum-plane of theseptum ivhereof sections are shown in fif/. 10, p. 43.

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