LXV 



hlens. Ber. Schl. Ges. f. vaterl. Cult. Svo. Breslau 1863. — Mit Naehtrag von 

 Ferdinand Cohn. 

 Hirst G. D. — Method of intensifying the resolving power of microscopic objectives 

 (Amphipleura pellucida and Pleurosigma angulatum). Micr. Bull. vol. V. 

 n. 5. p. 36. Fhiladelphia 1888. 



— Histological structures and the Diffraction Theory. J. R. M. S. 1888, pag. 119. 



8vo. London 1888. 

 Hitchcock Romyn. — On filamentous projections on Diatoms. A. M. M. J. vol. V. 

 p. 176. 8vo. Washington 1884. 



— Imbedding Diatoms. J. R. M. S. vol. IV, ser. 2. (1884) pt. 3. p. 474. 8vo. Lon- 



dou 1884. A. M. M. J. vol. V. (1884) p. 54. Svo. Washington 1884. 



— Beading of Amphipleura and photoinicrography. A. M. M. J. vol. VI, p. 32, 42. 



8vo. Washington 1885. 



— Smith's new mounting media. Amer. Naturalist vol. XX, p. 88. 8vo. New York 



1886 - J. R. M. S. vol. VI, ser. 2, p. 180. 8vo. London 1886. 



— On mounting certain Diatoms. A. M. M. J. vol. VII, p. 148. 8vo. Washington 



1886. - J. R. M. S. vol. VI. ser. 2, p. 1079. Svo. London 1886. 



— Resolution of pearls of Amphipleura. A. M. M. J. vol. VIII, n. 6. p. 105. 8vo. 



Washington 1887. 

 Hodgson E. — On a collection of Diatomaceee near Ulverstone. Svo. 1862. 

 Hoffmann H. — Ein Versuch zur Bestimmung des Werthes von «Species» und «Va- 



rietat». Bot. Zeit. p. 1. 4to. Leipzig 1862. 



— Diatomeen von Giessen. Ber. Oberschles. Ges. f. Nat. u. Heilkund. Giessen 1873. 



— Beitrage zur Diatomeenflora von Marburg. Bot. Hefte Forsch. aus d. Bot. 



Garten z. Marburg Heft I, p. 129. Svo. Marburg 1885. 

 Hofmeister W. — Ueber die Fortpflanzung der Desmidieen und Diatomeen. Ber. d. 



k. s. Acad. d. Wiss. p. 18. 1 Tafel. Svo. Leipzig 1857. — Also: On the pro- 



pagation of the Desmidiese and Diatomese. Translated by Arthur Henfrey. A. 



and M. N. H. vol I. ser. 3. 1. pl. 8vo. London 1858. 

 Hogg Jabez. — Cilia in Diatomacese. Q. J. M. S. vol. III. p. 335. 8vo. London 1855. 



— Diatomacese. Hogg on the Microscope. 8vo. London. Ed. I. 1854. New ed. 1867. 



— Movements of Diatoms. J. R. M. S. vol. III. ser. 2. p. 262. 8vo. London 1883. 



— Further observations on the movement of Diatoms. Mem. Soc. Belg. Micr. 



voi. VII, p. 9. 8vo. Bruxelles 1883. 



— Observations nouvelles sur les mouvements des Diatomces. Journ. Microg. Svo. 



Paris 1884. 

 Hohenbuehel Heufler L. — Enumeratio Cryptogamarum Italise Venetse. Vindobonee 



1871. 

 Hooker. — Five references to Antarctic Diatoms. Rep. Brit. Ass. 1877. 8vo. Londou 



1877. 

 Hopkins F. V. — Report upon the specimeus obtained from borings made in 1874, 



between the Mississippi River and Lake Borgne, at the site proposed for an 



ontlet for flood waters. 2 plates. Suppl. to Rep. of Comm. of Engineers, 16 



Jan. 1875. p. 42. Appendix 4. 8vo. pl. Washington 1878. 

 Hornemann J. W. — Icones plantarum sponte nascentium in Regno Danise et in Du- 



catibus Slesvici, Holsatise et Lauenburgise ad illustrandum opus de iisdem 



