252 Carter. — Studies on the Chlor op lasts of Desmids. I. 
Lutkemuller, J. (1893) : Beobachtungen iiber die Chlorophyllkorper einiger Desmidiaceen. 
Oesterr. bot. Zeitschrift, 1893, Nr. 1 u. 2. 
: (1895) : Ueber die Galtung Spirotaenia , Breb. Ibid., 1895, Nr. 1 u. ff. 
(1902) : Die Zellmembran der Desmidiaceen. Beitrage zur Biologie der Pflanzen, 
Band viii, 1902. 
(1903) : Ueber die Gattung Spirotaenia, Breb. Oesterr. bot. Zeitschrift, 1903. 
Lutman, B. F. (1910) : The Cell Structure of Closterium Ehrenbergii and Closterium moniliferum . 
Bot. Gazette, xlix, 1910. 
(1911) : Cell and Nuclear Division in Closterium. Bot. Gazette, li, 1911. 
Nageli, C. (1849): Gattungen einzelliger Algen. Zurich, 1849. 
Ralfs, J. (1848): The British Desmidiaceae. London, 1848. 
Schmitz, Fr. (1882): Die Chromatophoren der Algen. Bonn, 1882. 
West, G. S. (1904) : The British Freshwater Algae. Cambridge, 1904. 
(1914) : A Contribution to our Knowledge of the Freshwater Algae of Columbia. 
M&n. de la Soc. neuch&teloise des Sci. Nat., 1914. 
West, W. and G. S. (1896) : On some New and Interesting Freshwater Algae. Journ. Roy. Micro. 
Soc., 1896. 
(1897) : Desmids from the United States. Journ. Linn. Soc., vol. xxxiii, 1897. 
(1898) : Observations on the-Conjugatae. Ann. Bot., vol. xii, 1898. 
(1902) : A Contribution to the Freshwater Algae of the North of Ireland. 
Trans. Roy. Irish Acad., 1902. 
(1903) : Notes on Freshwater Algae. Journ. Bot., 1903. 
(1904-11): Monograph of the British Desmidiaceae. Ray Soc., vqI. i, 1904; 
vol. ii, 1905 ; vol. iii, 1908 ; vol. iv, 1911. 
(1907) : Freshwater Algae from Burma. Ann. Roy. Bot. Gardens, Calcutta, 1907. 
DESCRIPTION OF PLATES XIV-XVIII. 
Illustrating Miss Nellie Carter’s paper on the Chloroplasts of Desmids. 
The specific characters of Desmids are sometimes obliterated during the prolonged processes 
of preparation, but all the species were identified in either the living or carefully fixed condition 
by Professor G. S. West. 
PLATE XIV. 
Figs. 1-5. Closterium Lunula, (Miill.) Nitzsch. Fig. 1 x 350 ; Fig. 2, transverse section of 
a similar specimen, x 810; Fig. 3, another individual, the ridges of whose chloroplast are much 
broader, x 350; Fig. 4, transverse section of a similar specimen, x 810; Fig. 5, transverse section 
near apex of cell, x 810. 
Figs. 6, 7. Cl. laticeolatum, Kiitz. Fig. 6 x 510; Fig. 7, transverse section (intervening 
cytoplasm more deeply stained than the chloroplast itself), x 810. 
Figs. 8, 9. Cl. Libellula , Focke. Fig. 8 x 510; Fig. 9, transverse section (axis distended with 
starch), x 810. 
Figs. 10-12. Cl. attenuatum , Ehrenb. Fig. 10 x 510; Fig. 11, transverse section near apex 
of cell, x 810; Fig. 12, transverse section from thicker part, x 810. 
Figs. 13-15. Netrium Digitus, (Ehrenb.) Itzigs. and Rothe. Fig. 13, whole specimen, x 510; 
Fig. 14, longitudinal median section, x 510; Fig. 15, transverse section, x 510. 
Figs. 16-18. N. oblongum , (de Bary) Liitkem., var. cylindricum, W. and G. S. West. Fig. 16, 
specimen having one long pyrenoid in each chloroplast, x 510; Fig. 17, specimen having many 
small pyrenoids, x 510; Fig. 18, optical section, x 510. 
