247 



Pearl, Raymond and Surface, Frank M. 

 Selection index numbers and their use 

 in breeding. Amer. Nat. New York 

 N.Y. 43 1909 (385-400 with table fig.). 

 [0090 4600]. 60341 



Pearson, H[enry] H[arold] W[elch]. 

 The embryo of Weliritsclua. Ann. Bot. 

 Oxford 24 1910 (759-766 pi. 64 and 

 2 figs.). [23S0 6500]. 60342 



On the collections of dried 



plants obtained in south-west Africa by 

 the Percy Sladen Memorial Expeditions 

 1908-1911. (Report No. 5.) Cape Town 

 Ann. S. Afric. Miss. 9 (1-19 with one 

 map). [0020/ 8Q00 f fe fg]. 60343 



■ Wehdtschia mirab'dia. 



Gard. Chron. London (Ser. 3) 47 1910 

 (49-51 figs. 31-33 & suppl. illust.). 

 [1000 6500 8000/^]. 60344 



• The travels of a botanist 



in South-West Africa. (Percy Sladen 

 Memorial ExjDedition, 1908-9. Report 

 No. 1.) Geog. J. London 35 1910 (481- 

 511 12 figs.). mOOfgl 60345 



A national botanic garden 



for South Africa. [Extract]. Kew Bull. 

 London 1910 (372-380). [0040 OOGO]. 



60346 



Verbenaceae (conclusion) 



[of the Cape]. In : Dyer Flora capensis 

 5 sect. 1 1910 (225-226). [5400 

 [8000 fgl 60347 



■ Thymelaeaceae [of tropical 

 Africa]. In : Dyer Flora trop. Afr. 6 

 sect. 1 1910 (212-255). [5400 8000 fj. 



60348 



Pearson, Robert W. J. The spots of 

 Conium maeulatum. Selborne Mag. and 

 Nature Notes London 21 1910 (112- 

 113). [1060 6000]. 60349 



Pease, Arthur Stanley and Moore, 

 Albert Hanford. Agropyron caninuni 

 and its North American allies. Rliodora 

 Boston Mass 12 1910 (61-77). [6000 

 8000 g]. ' 60350 



Pecenko, B. F. IleqeHKO, B. <J>. Ki. 

 Bonpocj 6aKTepiaJibHuxt opraHH3- 

 MaxT.. BaciUopsis Stylopygae n. g. n. 

 sp. ; cTpoenie ii n.nKJi. pasBiixia. [Zur 

 Frage liber bakterielle Organismen. 

 JBacillopsis Stylopygae n. g. n. sp. ; Bau 

 und Entwicklungsgeschichte]. VarSava 

 Prot. Ob§c. jest. '21 1909 (69-105 mit 46 

 Textfig. und 1 Taf.). [7700]. 60351 



Peck, Charles Ilorton. New species 

 of fungi. New York N.Y. Bull. Torrey 

 Bot. CI. 36 1909 (329-339). [7700 

 8000 gg gi gh]. 60352 



— Report of the State 



botanist, 1909. Albany NY. Educ. 

 Dept. St. Mus. Bull. No. 139 1910 (1- 

 114withcol.pl.). [5400 7700 8000 gg]. 



60353 

 Peckolt, Th[eodor]. Heil- und Nutz- 

 pflanzen Brasiliens. Solanaceae. Passi- 

 floraceae. Berlin Ber. D. pliarm. Ges. 

 19 1909 (31-45 180-207 292-315 343- 

 361) Apocynaceae t.c. (529-556) 20 1910 

 (36-58) Asclepiadaceae (142-453) Con- 

 voUailaceae. Rosaceae. t.a. (481-506 

 585-600). [5400 3120 8000 Wi]. 



60354 

 Pedicino, N. A. v. Hooker. 



Pedon, J[ean] B[aptiste Jules]. Le 

 Plateau de Millevaches. Rev. sci. 

 Limous. Limoges 18 1910 (333-338 

 345-350) 19 1911 (1-6 18-19). [186]. 

 [8000 df]. 60355 



Peebles, Florence. The life history 

 of Sphaerella lacustrls {lIaemalococe.ua 

 plumalia) with especial reference to the 

 nature and behaviour of the zoospores. 

 Centralbl. Bakt. Jena Abt. 2 24 1909 

 (511-521). [7400 1660]. 60356 



Peglion, Vittorio. Sulla difesa dei 

 medical dalle cuscute. Bologna Ann. 

 Soc. agrar. prov. 49 1909 (321-343). 

 [4350]. 60357 



Una missione agricola nel 



Texas. Riv. Colon. Roma 4 1909 

 (Suppl. 25-88). [8000 gW]. 60358 



Ija forma ascofora dal- 



I'oidio della vite nel Ferrarese. Roma 

 Rend. Ace. Lincei (Ser. 5) 18 1909 

 (488-491). [7700]. 60359 



Ueber die Biologie der 



Sderospora, eines Parasiten der Grami- 

 neen. Centralbl. Bakt. Jena Abt. 2 28 

 1910(580-589). [7700 4050 6000]. 



60360 



Intorno alia carie del fru- 



mento. Roma Rend. Ace. Lincei (Ser. 

 5)19 1910(216-220). [4050J. 60361 



Auomalie di vegetazione 



delle bietole zuccherine porta-seme. 

 Roma Rend. Ace. Lincei (Ser. 5) 19 1910 

 (253-256). [1800]. 60362 



Intorno alia forma ascofora 



deir oidio della vite. Roma Rend. Ace. 



