cxxviii Bibliotheca Pliycologica. 



Walkeu Th. — Dasya venusta ia Britain. (Journ. of Botauy vol. XXI, 1883, p. 52-53;. 



— Bournemouth Algse. (Ibidom p. 373-374). 



— Marine Algse at Lyme llogis. (Ibidem vol. XXII, 1884, p. 377). 



Walker W. C. et Chase H H. — Notes on some new and rare Diatoms ser. I, with 



2 platos. Utica, New York, 1886. 

 Wallace J. — An account of the islands of Orkney. London 1700. 

 Wallich G. C, — On Triceratium and some new allied forms, Hydrosera. (Quart. 



Journ. of Micr. Sc. vol. VI. 1858, p. 242, plates XII-XIII). 



— Ou Siliceous Organisms found in digostive Cavities of the Salpa3 and their re- 



lation to the Flint Nodules in Chalk. (Trans. Micr. Soc. vol. VII, 18(30, p. 36, 

 plate II). 



— On the Development and Structure of the Diatom valvos. (Ibidem vol. VIII, 



1869, p. 129). 



— Ou the Markings of the Diatomacese in common use as Test-objects. (Ann. 



and Magaz. of Nat. Hist. vol. V, series III, 1860, p. 122). 



— Observations on the distribution and Habits of the pelagio and Freshwater 



free floating Diatomaceaj. (Ibidem vol. V, serles III, 1860, p. 122). 



— Descriptions of Desmidiacea; from Lower Bengal. (Ibidem vol. V, series III, 



1860, p. 184 et 273, w. 3 plat.). 



— Do Diatoms live ou the Sea-bottoms at great dephts. (Ibidem vol. XII, ser. III, 



1863). 



— On the Structure of the valves of Pleurosigma and other diatoms. (Ibid. v. XI, 



series III, 1862). 



— On the Relation betweeu tlie Development, Ileproduction and Markings of 



the Diatomacese, with 1 plate. (Monthly Microscopical Journal vol. XVII, 

 1867, p. 61). 



— Are the Desmids and Diatoms simple cells?. (Pop. Sc. Review vol. I, N. S. 



1877). 



— On Filaments on Diatoms. CJourn. R. Micr. Soc. V, 1885, p. 572). 



— Structure of Diatoms. (Engl. Mech. 1885, vol. XL, p. 496). 



Wallroth C. F. W. — Annus botanicus sivo supplomentum tertiura ad Curtii Spren- 

 gelii Floram halensem. Ilalse 1815. 



— Flora cryptogamica Germanije : pars posterior continen Algas ct Fungos. No- 



rimbergas 1833. 

 Walther J. — Die gesteinsbildenden Kalkalgen des Golfes von Neapel und die En- 

 stehung structurloser Kalke. (Zeitschr. d. deutsch. Geol. Ges. Bd. XXXVII, 

 2). Berlin 1885. 



— Formation of Structurless Ciialk by Sea-weeds. (Scionco VII, 1886, p. 575). 

 Walz J. — Beitriige zur Morphologie und Systematik der Gattung Vaucheria. (Prin- 



gsh. Jahrb. Band V, Heft. 2). Leipzig 1866. 



— Beitriige zur Kenntniss der Zoosporenbildung bei den Algen. (Botanische Zci- 



tung 1868, p. 497). 



— Ueber die Befruchtung bci Urospora mirabili Aresch. (Sitzungsbericiitc der 



neurussischen Gescllschaft dur Naturforsclior zu Odessa 1874, p. 11-12). 



— Sur les algues du genre Sccnedesmus Meyen. (Mcmoires de la Societc des Na- 



tur. de Kicw 1870, I). 



