4 Echin, 
V. Echinoderma. 
[1920) 
I.— TITLES. 
Abrard, R. Sur l’existence de 
l’6tage Aalenien dans lo massif du 
Zerhoun et au Djebel Tselfat (Maroc 
oocidental). Paris C. R. Acad. Sci. 170 
1920 (1509-1511). [27 B iii (c) 2.] 1 
Abrard, R. Sur la constitution 
g6ologique du Djebel Tselfat (Maroc 
occidental). Paris C. R. Acad. Sci. 
171 1920 (119-120). [27 B iii (c) 1.] 2 
Airaghi, C. Su alcuni echinidi neo- 
genici di S. Giovanni di Galilea in 
Prov. di Forli. Atti Soc. Ital. Sci. 
Nat. 58 1920 (253-258). [27 B ii (c) 
(d); 31 C.] 8 
Arapferer, O. Ueber die Unter- 
echoido dor Entwicldung von Jura und 
Kreide im Sonnwendgobirge und in dor 
Mulde von Achenkirchen-Landl. 
Wien Verh. Geol. RchsAnst. 1917 
1917 (38-42). [27 B iii (c) 1.] 4 
Arndt, W. Zoologisoken Ergebnisse 
der ersten Lehrexpedition der Dr. P. 
Schottlander’schen Jubilaums-Stiftung. 
II. Echinodermata, Mollusca , Tuni- 
cala, Pisces (Aus dem Zoologischen 
Institut der Universitat Breslau). Bres- 
lau Jahresber. Ges. vaterl. Cultur 
91 1913 1914 (1-32). [03 6 ; 31 B C 
D E F.] 5 
Baker, C. L. Contributions to the 
stratigraphy of Eastern New Mexico. 
Amer. J. Sci. New Haven Conn. 49 
1920 (99-126). [27 Bi.] 6 
Baldwin, F. M. Susceptible and 
resistant phases of the dividing sea- 
urchin egg when subjected to various 
concentrations of lipoid-soluble sub- 
stances, especially the higher alcohols. 
Science New York 52 1920 (90-91). 
[03 6 ; 117; 15 8.] 7 
Baldwin, F. M. Susceptible and 
resistant phases of the dividing sea- 
urchin egg when subjected to various 
concentrations of lipoid-soluble sub- 
stances, especially the higher alcohols. 
Biol. Bull. Wood’s Hole Mass. 38 1920 
(123-140). [03 6 ; 15 4 8 ; 31 C.) 8 
Bassler, R. S. Systematic paleon- 
tology of the Cambrian and Ordovician 
Deposits of Maryland. Maryland Geol. 
Surv. Baltimore 1919 1919 (18-373) 
pis. xxiv-lviii. [27 B iv (b) (k) ; 31 
DFG.] 9 
Bather, F. A. Pholidocidaris anceps : 
a correction. Ann. Mag. Nat. Hist. 
London 5 1920 (271-^73). [07 3 ; 31 
C.] 10 
Bather, F. A. Echinoid or crinoid 1 
Geol. Mag. London 37 1920 (371-372). 
[27 B iv (b) ; 31 C F.] 11 
Benson, W. N., Dun, W. S. and 
Browne, W. R. The geology and petro- 
logy of the great serpentine belt of New 
South Wales. Part IX. The geology, 
palaeontology and potrography of the 
Currabubula District, with notes on 
adjacent regions. Sydney N.S.W. Proc. 
Linn. Soc. N.S. Wales 45 1920 (337-374) 
pis. xviii-xxiv. [27 B iv (e) ; 31 F.] 12 
Berz, K. C. Petrographiscli-strati- 
graphische Studien im oberschwab- 
ischen Molassegebiet. Stuttgart Jahres- 
hefte Ver. Natk. 71 1915 (276-343). 
[27 B ii (d) ; 31 C.] 13 
Braun, L. Geologische Beschreibung 
von Blatt. Frick. (1 : 25,000) im Aar- 
gauer Tafoljura. Basel Vorh. Naturf. 
Ges. 31 1919-20 1920 (189-242). [27 B 
iii (c) 2 (d).] 14 
Brouwer, I. H. A. Geologisch over- 
zicht van het oostelijk godeelte van 
den Oost-Indisohon Archipel. Strati- 
grafie, tektoniek, vulcanisme. Jaarb. 
Mijnw. Med. Ind. Amsterdam 1917 
1919 (145-452). [27 B iii (b) 1 (o) 
2 (e) iv (c).] 15 
Browne, W. R. vide Benson, W. N* 
and Dun, W. S. 
Brydone, R. M. The Origin of Flint. 
Geol. Mag. London 57 1920 (401-404). 
[27 B iii (b) 1 ; 31 C.) 16 
Burnley, A. I. Marine biologists at 
Scarborough. Naturalist London 1920 
1920 (363-364). [27 A ii.] 17 
