[l 9 2I.] 



G 



ARBER, E. A. N. On the Fossil Flora of the Southern Portion of the Yorkshire 

 Coalfield. Part II. — North Derbyshire. Proc. Yorks. Geol. Soc. xix. 

 pp. 350-358, pis. xxxix-xli. 1920. 



2. Devonian Floras : a Study of the Origin of Cormophyta. Pp. i-xiv, 1-100, 



figs. 1 pi. [portrait]. 8vo. Cambridge, 1921. 



. See also Pruvost, P. 



ARLT, H., & H. Stei>~metz. Ueber ein neues Mineralvorkommen aus Brasilien. 



Zeitschr.f. Krist. liv. pp. 590-606, figs. 1915. 

 ARMAS HE YSKY, P. J. Obit.— See Spencer, L. J., 2. 



ARNOLD, R. Oil Geology in Relation to Valuation. Bull. GeoL Soc. Am. xxxi. 

 pp. 433-440. 1920. 



ARTHABER, G. vox. Ueber Flugsaurier. Mitt. qeol. GeseUsch. Wien, xii. 

 pp. 166-169. 1920. 



ART1NI, E. Appunti di Mineralogia italiana : Calcite di Pradalunga (Val Seriana). 



Atti So.c. ital. Set. nat. xl. pp. 269-274, figs. 1901. 

 2. Note rnineralo°;iche sulla Yalsassina. Ibid. xlii. pp. 101-117, fi<rs. pis. iv 



& v. 1903. 



3. Intorno a una Roccia Lamprofirica della Yal Flesch (Yal Seriana). Ibid. 



xliii. pp. 20-33, pis. ii & iii. 1904. 

 4. Osservazioni petrographiche su di alcune Rocce fosfatiche della Palestina. 



Ibid. 1. pp. 349-364, pi. vii. 1912. 

 5. Sulla Composizione mineralogica di alcune Sabbie e Terreni della Tri- 



politania e dell' Algeria. Ibid, li. pp. 135-144. 1912. 

 6. Sulla Composizione mineralosrica di alcune Sabbie del Deserto Arabico. 



Ibid. liii. pp. 372-390. 1915. 

 7. Intorno alia Composizione mineralogica di alcune Sabbie ed Arenarie 



raccolte dalla Missione scientifica Stefani>"i-Paoli nella Somalia Italiana 



(1913). Ibid. liv. pp. 137-168, pi. iv. 1916. 

 ASCH, D. See Asch, W. 



ASCII, \V., & D. Asch. Die Konstitution des Zinnwaldits uud Kryophyllits im 

 Lichte der Stereo-Hexit-Pentit-Theorie. Zeitschr. f. Kryst. liv. pp. 584-586. 

 1915. 



ASHLEY, G. H. Cannel Coal in the United States. Bull. U.S. Gcol. Surv. no. 659, 



pp. 1-127, figs. pis. i-viii. 1918. 

 2. Sulphur in Coal, Geological Aspects. Trans. Am. Inst. II. E. lxiii. 



pp. 732-738. 1920. 



ASHTON, W. The Evolution of a Coast-Line, Barrow to Aberystwyth and the 



Isle of Man, with Notes on Lost Towns, Submarine Discoveries, etc. Pp. 1-302, 



figs. 8vo. London, 1920. 

 ASKLUND, B. Oni en Kisforekomst bunden till Gronsten fran Krokeks Socken i 



G£stergotland. Geol. Worm. Stockh. Fbrh. xliii. pp. 403-411, figs. [geol. 



sketch-map] . 1921. 



ASSELBERGHS, E. Le Devonien inferieur du Sud-Est de l'Ardenne Beige. Mem. 



Inst. geol. Univ. Louvain, i. pp. 1-175, figs. pis. i-iii [geol. maps]. 1913. 

 2. Notes sur le Mesodevonien de la Region de Ferrieres (Bord Oriental du 



Bassin de Dinant). Bull. Soc. beige Geol, xxix. pp. 18-27, fig. 1919. 

 3. Gites nouveaux d' Oldhamia radiata a Oisquercq (Vallee de la Sennette). 



Ibid. pp. 102-103. 1920. 

 4. Devonien du Massif de la Vesdre dans le Yallon de la Gileppe ; Traversee 



des Hautes Fanges de la Gileppe a Malmedy. Ibid. pp. 220-231, figs. 1920. 

 5. Decouverte de ' Bone-Beds' a Ostracodermes dans le Taunusien a l'Est de 



la Meuse. Ibid. xxx. pp. 22-23. 1920. 



6. Notes sur le Synclinal de l'Eifel a Cugnon. Ibid. pp. 30-32. 1920. 



7. Compte rendu de 1'Excursion du 3 Octobre 1920 dans le Devonien inferieur 



de la Valee d'Acoz. Ann. Soc. geol. Belg. xliii. Bull. pp. 300-303. 1921. 

 8. Correlation between the Meadfoot Beds of Devonshire and the Siegenian of 



the Ardennes (Lower Devonian). Geol, Mag. 1921, pp. 165-169. 1921. 

 ASSMANN, P. Ein Beitrag zur Gliedernng des Oberen Buntsandsteins im ostlichen 



Oberschlesien. Jahrb. k.-preuss. geol. landesanst. xxxiv. pt. 1, pp. 658-671. 



1914. 



2. Ueber das Alter der oberschlesischen Brauneisenerze uud Eisenerzbegleiter. 



Ibid. xxxv. pt. 1, pp. 316-326, figs. 1914. 

 ■ 3. [Endmoranen. Sander, Beckenterrasse; Blatter Gollantsch und Margonin.] 



Ibid, xxxiv. pt. 2, pp. 671-672. 1915. 

 4. Die Brachiopoden und Lamellibranchiaten der oberschlesischen Trias. 



Ibid, xxxvi. pt. 1, pp. 586-638, figs. pis. xxx-xxxvi. 1916. And A.C. 

 ATKINSON, J. B. Genesis of Cumberland Iron Ores. Mining Mag. xxiv. 



pp. 91-96 158-159. 1921. 



