Weiss, J. E. Die Gniudhigeu eiiies 

 plamniissigeu Pflanzeiiscliutzes. Prakt. 

 Bl. Pflanzeuschutz, Stuttnjart, 4, 1901, 

 (1-3,9-11,17-19). [4350 4000]. 1808 



Kurzgefasstes Leluhuch 



der Krauklieiten und Beschadiguiigen 

 uuserer Kulturrrewaclise. Eiii Leitfadeu 

 zum Unterriclit an Solmlen sowio zur 

 Selbstbelehruug. Stutt<Tart (E. Ulmer), 

 1901, (VIII + 179). 22 cm. Geb. 1,75 

 M. [4000 N 0219]. 1809 



Die Pockenkrankheit der 



Birnenblatter. Prakt. Bl. Pflanzen- 

 schutz, Stuttgart, 4, 1901, (7-8). [4100 

 N 3031]. 1810 



Poniiu. Prakt. Bl. Pflau- 



zenschutz, Stuttgart, 4, 1901, (8). 

 [4350]. 1811 



Die Rubenblattwespe tmd 



ihre Bekampfung. Prakt. Bl. Pflanzen- 

 schutz, Stuttsart, 4, 1901, (51-52). 

 [4100 N463i]. 1812 



Zur Bekampfung der Erd- 



flolie am Hopfen. Prnkt. Bl. Pflauzen- 

 schutz, Stuttgart, 4, 1901, (31-32). 

 [4100 5400]. 1813 



Zur Frage der Wirkungs- 



weise der Kiipferbriihen. Prakt. Bl. 

 Pflanzenscliutz, Stuttgart, 4, 1901, (21- 

 33). [4350]. 1814 



Weldon, W[alter] F[rank] R[apliael]. 

 Change inorganic correlation of Ficaria 

 ramumuloides during tlie flowering- 

 season. Biometrika, Cambridge, 1, 

 1901, (125-128, 2 tables). [1500 3650 

 5400]. 1815 



■ V. Galton, Francis. 



Welsh, A. Pt. List of observations [of 

 the Rugbv flora], 1900 [chiefly phono- 

 logical]." "Rugbv, Rep. Sch. Nat. Hist. 

 Soc, 1900, [1901], (27-28). [3800]. 



1816 



Welwitscli, Friedrich [Martin Josef]. 

 Catalogue of the African plants collected 

 by Dr. FRiEnracH Welwitsch, in 1853-61. 

 Vol. 2, part ii, Crvptogamia, London, 

 (British Museum),"' 1901, (261-565), 

 22 cm. [Authors, W. Carruthers, A. 

 Gepp, F. Stephani, "A. Braun," E. S. 

 Barton, W. West, G. 8. West. T. Comber, 

 E. A. Wainio, a. L. Smith, and A. 

 Lister]. [5000 0060]. 1817 



Wendeler, P. Der Stickstoff der 

 Riibensafte im Laufe ihrer Verarbeitung. 

 D. Zuckerind., Berlin, 26, 1901, (1368- 

 1369). [3120 D 1820 0490 QllOO]. 



1818 



Went, F[riedrich] A[ugust] F[erdi- 

 uand] C[hristian]. Monilia s'ltophila 

 (Mont.) Sacc, ein teclmischer Pilz Javas. 

 Centralbl. Bakt., Jena, Abth. 2, 7, 1901, 

 (544 5.')0, 591-598, mit 1 Taf.). [77UO 

 R 2620 Q 1875]. 1819 



Over den invloed van de 



voeding op de afscheiding van enzymen 

 door Monilia sitophila (Mont.) Sacc. 

 [On the influence of nutrition on the 

 secretion of enzj-mes hy Monilia sitopJiila 

 (Mont.) Sacc.]. Amsterdam, Ver.sl. 

 Wis. Nat. Afd. K. Akad. Wet., 9, 1901, 

 (486-499) (Dutch); ^Vmsterdam, Proc. 

 Sci. K. Akad. Wet., 3, 1901, (489-502) 

 (English). [3100 7700] 1820 



Wentzel, M. v. Thoms, Hermann. 



Werckle, Carlos. Griinende Vogel- 

 nester in Westindien. Gartenflora, 

 Berlin, 50, 1901, (329). [6000 N 5819]. 



1821 



West, G. S. V. West, W. 



West, W[illiam]. Spiranthes Roman- 

 zoifiana in Antrim. J. Bot., London, 

 39i 1901, (343). [6000 8000 de]. 



1822 



West, W[illiam], and West, G[eorge} 

 S[tepherL]. Freshwater Algae. Wel- 

 witsch, F. Catalogue ... 2, (329- 

 381). (7400 8000 /e]. 1823 



^ Fresh Water 



Chlorophyceae, in Johs. Schmidt, Flora 

 of Koh Chang, Part IV. Kjobenhavn^ 

 Bot. Tids, 24, 1901, (157-186, with 

 3 pL). [7400 8000 ee]. 1824 



Notes on the 



Algae of Lough Neagh. Provisional 

 report to the R[oyal] l[rish] A[cademy] 

 Fauna and Flora Committee. Irish 

 Nat., Dublin, 10. 1901, (86-87). [7400 

 8000 clc]. 1825 



Westphalen, W. von. v. Wallach, 

 Otto. 



Whall, James Snow. . . . On a 

 supposed hybrid between L[ilium] 

 pavdalinum ^and L. Parryi ? . London, 

 J. R. Hort. Soc, 26, 1901, (427). 

 [3550 6000]. 1826 



Wheeler, W[illiam] A. A Contribu- 

 tion to the Knowledge of the Flora of 

 the Red River Valley in Minnesota. 

 Minnesota, St. Paul, Minn. Bot. Stud., 

 Geol. Nat. Hist. Surv., 2, 1901, (569- 

 600, with 8 pi.). [5000 8000 ^j]. 



1827 



Wheldon, J[ames] A[lfred]. Casual 

 plants at Aintree, near Liverpool. 

 Naturalist, London, 1901, (254). [5000 

 8000 de\ 1828 



