224 



tuug fiir die Volksernahrung. (Ser. 1.) 

 Ceutralbl. Bakt. Jena Abt. 2 33 1912 

 (1-54 mit 1 Taf.). [7700]. 7404-^ 



Olsson-SefTer, Pehr. The sand strand 

 flora of marine coasts. [With biblio- 

 graphy.] Rock Ishand 111. Augustana 

 Libr. Pub. No. 7 1910 (43-183 with ff.). 

 [3200 3450]. 74043 



Omeliansky, W[asil]. Zur IVage der 

 Zelkilosegarung. Centralbl. Bakt. Jena 

 Abt. 2 36 1913 (472-473). [3100 

 7700]. 74044 



Onor, Romolo. Dei prodotti coloniali 

 in rapporto ai bisogni della madre 

 23atria e specialmente delLa coltura 

 cotoniera : Somalia Italiana. Roma 

 Istituto Colouiale Italiano Atti del 

 secondo congresso degli italiani al- 

 I'estero. Vol. 1 part. 3 1911 (1411- 

 1429). [0040]. 74045 



Note sulle culture tropicali. 



Osborn, T. CI. B. The life cycle and 

 affinities of the Plasmodiophoraceae. 

 Loudon Rep. Brit. Ass. 1911 [1912] 

 (572). [2740 7700]. 74053 



Preliminary observations 



(Relazione sulla Somalia Italiana del 

 Governatore Giacomo De Llartino per 

 gli anni 1911-1912). Roma (tipa. della 

 Camera dei Deputati) 1912 (14G-190). 

 32 cm. [5000 8000/^]. 74046 



Oppenheim, Paul. Uber Kultur- 

 methoden und iiber den Grad der Emp- 

 lindlichkeit mancher Orchideen gegen 

 Frost. Orchis Berlin 6 1912 (47-54). 

 [4150 0000]. 74047 



Oppermann, A[dolf]. zEdelgranens 

 Va?kst paa Bornholm. (Le Sapin 

 pectine a I'ile de Bornholm.) K^ben- 

 havn Forstl. Forg0gsv. 4 (1912) (24-39). 

 [8000 da]. 74048 



Den gr0nne Douglasies 



va^kst 1 Danmark. [The Douglas fir in 

 Denmark.] K0benhavn Forstl. For- 

 s0gsv. 4 1912 (40-56). [8000 da]. 



74049 

 Oppermann, Hermann. Anatomie 

 nnd Biologic der jrmgen Achsen einiger 

 Macchienpflanzen. Diss. Gottingen 

 (Driick V. W. F. Kaestner) 1911 (95). 

 22 cm. [1000 3010 3200 1060 

 3120]. 74050 



Orr, M. Y. Kenfig Burrows [Gla- 

 morganshire] : an ecological study. 

 Scot. Bot. Rev. Edinburgh 1 1912 (209- 

 216). [3200 8000 c/c]. 74051 



Orton, G. R. Correlation between 

 certain species of Puccinia and Uro- 

 myces. M3'cologia New York 4 1912 

 (194-204 with pis.). [7700 SOOOgdcji]. 



74052 



on the mildew of grey cloth. J. Econ. 

 Biol London 7 1912 (51-63 3 text-figs.). 

 [7700]. 74054 



A note on the submerged 



forest at Barmouth. Manchester Mem. 

 Lit. Phil. Soc. 56 n. 16 (1-10 pi. 1 2 

 2 figs.). [8000 de]. 74055 



Osborne, Thomas B. Darstellung der 

 Proteine der Pflanzenwelt. [In : Hand- 

 buch der biochem. Arbeitsmeth., hrsg. 

 V. E. Abderhalden. Bd 2.] Berlin 

 (Urban & Schwarzenberg) 1910 (270- 

 334). [3120]. 74056 



Osner, Geo. A. Diseases of ginseng 

 caused by Sclerotinias. Indianapolis 

 Ind. Proc. Acad. Sci. 1911 1912 (355- 

 364 with ff.). [7700 4050 8000(79]. 



74057 



Ost, Walther v. Wallach, 0. 



Ostenfeld, C. H. Spredte lagttagelser 

 over MiddeUiavslandenes Vegetation. 

 [Some observations on the vegetation of 

 the Mediterranean]. K0benhavn Bot. 

 Tids. 33 1912 (51-53 with illustr.). 

 [8000 dh dl]. 74058 



Ekskursionen til Bornholm 



12-14 Maj 1911. [The excursion to 

 Bornholm the 12tli-14th of May 1911.] 

 K0benJiavn Bot. Tids. 33 1912 (63-6!) 

 with illustr.). [8000 da]. 74059 



Ekskursionen til Nord- eg 



0st-Falster 24-25, Juni 1911 [The 

 excursion to northern and eastern 

 Falster the 24th & 25th of June 1911.] 

 K0benliavn Bot. Tids. 33 1912 (71-77 

 with illustr.) [8000 da]. 74060 



■ A revision of the marine 



species of Clice.toeeras Ehbg. sect. 

 Simplicia Ostf. K0benhavn Medd. 

 Havunders. Serie Plankton 1 Nr. Kt 

 1912 (11 with illustr.). [7400]. 740GI 



The International Phyto- 



geographical Excursion in the British 

 Isles. VI. Some remarks on the floristic 

 results of the excursion, [n. var. tt 

 n. hybr.] N. Phytol. Cambridge 11 

 1912 (114-127 1 text-fig.). [5000 

 8000 de]. 74062 



Experiments on the origin 



of species in the genus H'leraciui 

 (apogamy and hybridism). N. Phytol. 



