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IV.—Hertfordshire Subsidences
Published online by Cambridge University Press: 01 May 2009
Extract
Subsidences are by no means unusual amongst the arable lands in the Chalk districts of this county. No one, who has travelled in these parts, can have failed to notice the numerous holes and dells dotted about the fields in all directions, many of which have fallen in, or will do so,incourse of time. Nearly all of them mark spots where the Chalk has been dug up for chalking the land, which is then said to work better.
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References
page 24 note 1 Dr. Hinde has already pointed out that Strephochetus, Seeley, H. M., is identical with the previously described Girvanella, and has further shown that the Siphonema of Dr. Bornemann, supposed by its describer to be a calcareous Alga, is likewise a synonym of GirvanellaGoogle Scholar (GEOL. MAG. 1887, Dec. III. Vol. IV. p. 227).Google Scholar
page 24 note 2 soils, Gravel, such as fringe the modern alluvium of rivers and streams, are chalked as well as the stronger soils.Google Scholar
page 25 note 1 See Kipon, Natural Pits at, by Rev. Stanley Tute, Proc. Yorks. Geol. and Polyt. Soc. 1869.Google Scholar Also ‘Subsidences over Permian Limestone,’ A. C. G. Cameron, Kep. Brit. Assoc. York, 1881, and Proc. Yorks. Geol. and Polyt. Soc. vol. vii. pt. iv.Google Scholar
page 25 note 2 named, Locally “shoots” and “earthquakes.”Google Scholar
page 25 note 3 See “Nature,” vol. xxxvii. Dec. 8, 1887, On an Earthquake in England, by Worthington G. Smith.Google Scholar