136 BIBLIOGRAPHY: GKOLOGY AND PAL.?;0NTOLOGY, 1888. 



C. RicKETTS [conductor of excursion]. Cheshire. 



Liverpool Geological Association [at Flaybrick Hill, Birkenhead, June nth, 

 1888]. Research, July 1888, p. 15. 



H. G. Seelky. York N.E. 



On the Mode of Development of the Young in Plesiosaurus [describes 



fttlal plesiosaurs from the Lias of Whitby]. Rep. Brit. Assoc, 1887, 697, 698. 



A. C. Seward. Lancashire. 



Woodwardian Museum Notes. On Calamites undulatus (Sternb.) [from 

 Coal-measures near Wigan ; the specimen sup]")orts the view that the undu- 

 lating character of the ribs on which the species is founded is due merely to 

 pressure]. Geo!. Mag., July 1888, (3), vol. v. ])p. 289-291 and plate ix. 



A. C. .Seward. Yorkshire. 



Woodwardian Museum Notes. On a Specimen of Cydopteris (Brong- 

 niart) [a large specimen from the Upper Coal-measures of Brierly Common]. 

 Geol. Mag., August 1888, dec. iii. vol. v. pp. 344-347. 



Theodore SiNOxOiN. Lancashire. 



On the recently disclosed Sections of the Superficial Strata along 

 Oxford Street, Manchester [detailed sections obtained during the con- 

 struction of a sewer along Oxford Street, Manchester, from the river Medlock 

 to High .Street, at a depth of about 30 ft.]. Trans. Manchester Geol. Soc, 

 vol. xix. Part 20, pp. 603-606, with section. 



J. Si'ENCER. York S.W. 



On the occurrence of a Boulder of Granitoid Gneiss or Gneissoid Granite 

 in the Halifax Hard Bed Coal [this boulder found in Hard Bed Coal, 

 Shibden Head Pit, near Halifax ; it is of a greyish colour, about four inches 

 in length by about two and a half square ; the angles have been worn off, and 

 the faces polished and striated transversely: this most probably due to 

 slickensiding ; Prof. Bonney has examined a section of it, and says : ' It is 

 one of unusual interest ; it is not a quartzite, but a granitoid gneiss or 

 gneissoid granite, probably derived from some mass of Pre-Canibrian age.' 

 The conditions attending the deposition of the strata enclosing the coal-seam 

 in which it occurred are added, and also the general character of the strata, 

 and the direction from whence they appear to have come. The author, in 

 conclusion, says it is reasonable to attribute the transportation of such boulders 

 to drifting and tangled masses of vegetable matter rather than to ice]. 

 Proc. Yorks. Geol, and Polyt. Soc, vol. xi. part i, pp. 96-100. 



J. Spencer. Lancashire. 



Evidence of Ice-Action in Carboniferous Times [abstract only ; the author 

 ascribes to floating ice certain striations in the Haslingden Flag-rock and at 

 a similar horizon near Rochdale]. Quart. Journ. (jeol. Soc, vol. xliv (Pro- 

 ceedings), pp. 93, 94. 



W. Squire. Durham, etc. 



The Sulphur Springs of Great Britain and their Therapeutic Action 



[giving particulars of these springs, and especially of Dinsdale-on-Tees, with 

 a brief notice of the geological conditions of this place]. Lancet, Aug. 4th, 

 1888, vol. ii. pp. 201-203. 



M. Stirrup. Lancashire. 



Foreign Boulders in Coal Seams [an exhaustive description of various 

 boulders found in coal-seams of Lancashire collieries from 1 85 1 downwards ; 

 classification of several by Prof. Bonney included ; in discussion, Mr. J. 

 Dickinson, F.G.S. (the President), believes them 'to be simply freaks of 

 nature, assuming the form which it has been assigned for such matter to take; 

 he would no more expect to imd a boulder in the middle of a coal seam than 

 in the middle of a cocoa-nut.' The large boulders from the Astley Pit at 

 Dukenficid are cpiartzites ; the large one from the Old Meadows Pit is granite; 

 another a dark gray quartz felsite, etc., etc.]. Proc. Manch. Geol. Soc, 

 vol. xix. Part 16, pp. 405-428, with sections and sketches of boulders. 



Naturalist, 



