T. VI

— Notes on Arachnoïdiscus , Pleurosigma, Amphiprora ,

Èunotia, and Amp hor a. {Q. J. M. S., T. VI, 1858).

— On the structure of Amphora, a genus of Diatomaceæ and

the diagnosis of its species {Q. J. M. S., T. VI, 1858).

— On Arachnoïdiscus {Q. J. M. S., T. VI, 1858).

— In reply to Dr. Donkin {Q. J. M. S ., T. VII, 1859).

— What are marine Diatoms {Q. J. M. S., T. VII, 1859).

— On Cycloiella {Q. J. M. S.. T. VIII, 1860).

— Notes on Cocconeis, Nitzschia , and some of the allied Gé-

néra of Diatomaceæ {Nat. Soc. Glasgow, 1868).

Wallich (G.-C.). — On Triceratium and some new allied forms {Hydrosera). {Q. J. M. S T. VI, 1858).

— On siliceous organisms found in the digestive cavities of the

Salpæ and their relation to the Flint Nodules found in Chalk. {T. M. S ., T. VII, pl. II, 1860).

— On the Development and structure of the Diatom valves. {T.

— On the markings of the Diatomaceæ in common use as Test-

objects. {Ann. and Mag. of Nat. Hist ., T. V, sér. III, 1860).

— Observations on the distribution and habits of the Pélagie

and Fresh-water free-floating Diatomaceæ. (Ann. and Mag. of Nat. Hist., T. V, sér. III, 1860).

Wallich (G.-C.). — On the Structure of the valves of Pleuro sigma and other Diatoms. (Ann. and Mag. of Nat. Hist ., T. XI, sér. III, 1863).

— Do Diatoms live on the Sea-bottoms at great depths. (Ann.

and Mag. of Nat. Hist., T. XII, sér. III , 1863).

— On the relation betwoen the development, reproduction,

and markings of the Diatomaceæ. (M. M. J., T. XVII, 1877).

— Are the Desmids and Diatoms simple cells. (Pop. Sci. Rev.,

— Trad. fr. par le Dr J. Pelletan. (Journ. de Micro gr., 1877). Walz (G. -F.). — Ueber zoosporen eine Diatomeæ. (Verli. dritte

Russich. Naiurf. Versaml. Kiew, 20 ann., 1871, et Botan. Zeit ., 1872).

Wartmann et Schenic. — Schweizerische Kryptogamen. (St-Gallen, 1863, Fasc. VII, Dekade 4; Hedw., T. III, 1864). Weir (T.-W.). — Cleaning recent Diatomaceous material. ( Microscope1889).

Weisse (J. -F.). — Mikroskopische Analyse eines organischen Polirschiefers aus dem Government Simbirsk, 3 Taf. (Bull. Ph. Math.d. VAcad. de St-Petersbourg, 4°, 1854).

— Nachlese St-Petersburgischen Infusorien. (Bull. P h. Math.

d. VAcad. des Sci. de St-Petersbourg, 1858-59).

— Die Diatomaceen des Badeschlammes von Arensberg und

Hapsal, wie auch des sogenannten Mineralschlammes des Soolen Badeanstalt in Staraja Russa. 1 Taf. (Bull, et VAcad. Imp. des Sci., St-Petersbourg, 1860; et Mélanges biologiques, T. III).

— Diatomaceen des Ladoga See. (St-Petersburg, 8°, 1864).

— Fernere Untersuchungen von Grundproben, ausdem Ladoga

See. 1 Taf. (St-Petersburg, 8°, 1865).

— Mikroskopische Untersuchung des Guanos. 2 Taf. (St-Peters-

burg, 8°, 1867).

— Viertes Verzeichniss St-Petersburgisches Infusorien, nebst

Beschreibung zweier neuen Arten. 1 Taf. (Bull. Ph. Math, de VAcad. de St-Petersbourg ).

Weiss (Adolf). — Verzeichniss aller von mir ineinen30. — Jahren Zeitraum zu St-Petersburg beobachteten Infusorien Bacillarien und Ræderthiere. (Moskau, 1863).

— Zum Baue und der Natur der Diatomaceen, 3 Taf. (Sitzb. d.

Kaiser. Akad. der Wissen, 1871).

— Nature of Diatom structure. (M. M. J., T. VIII, 1872). Wells (S.). — On the structure of Eupodiscus Argus. (M. M. J.,