422 REPORT—1899. 
APPENDIX C. 
Fic, 7.—Diagram at N.E. side of Alexandra Quarry, showing dome-like arrangement 
of sand and gravel beneath Boulder Clay. 
La a . = 
oe ——————— u = 
— — or 
Top 
(eG aa pps ere ae == & a ono 32 =,0 =, = 0.3" -a > Boulder clay 
2 Eg Oe TO eee 100! 5 0 allman 
fo Cer gua bone an gas = eS ee ee pa) = EN «san gem 
US => Ge Ss 27 SN SUrace. 
ee Se ee renew ob 
Yo ——¥ i ee eee = ay with sand & 
: Se ae ek oS ae Tn So ern ae : | gravel in domes 
Length 50 to G0 yards. Height about 60 feet. 
Norr.—Much of the middle series consists of fine plastic reddish-yellow 
clay or silt without stones, the kind of material common in the stratified 
drifts of the Isleof Man. Shell fragments rather plentiful in the gravelly 
streaks, but none seen in the clay or sand. 
APPENDIX D. 
Bibliography. 
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1838.—James Smith, of ‘Latest Changes in the Relative Levels of the Sea and 
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1860.—A. C. Ramsay « ‘The Old Glaciers of North Wales,’ p. 96. 
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1881. Geol. North Wales, ‘Mem, Geol. Survey,’ vol. ii. pp. 276-8. 
1863.—R. D. Darbishire . On Marine Shells in Stratified Drift at High Levels on 
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1869.—D, Mackintosh . ‘Scenery of England and Wales,’ p. 70. 
1879. > Dispersion of Erratics, ‘Q.J.G.S.’ vol. xxxy, pp. 425-— 
« 453. 
1881, - High-level Marine Drifts, ‘Q.J.G.S.’ vol. xxxvii. pp. 351- 
369. 
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1864-81,—C, Lyell . . ‘Student’s Elements of Geology’ (1st edit.), p. 157, 1871. 
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