XXIV CONTENTS. 



PAGB 



Crystalloids of Marine Algce Part 2 292 



The Diatoms of the London Clay. (Plate V. Fig. 1) . . Part 3 381 

 On a New Species of Eydrosera ( Wallich'). (Plate V. Figs. 



2andS) „ 424 



New Maritime Algce „ 502 



Transformation of a Fertile Branch of Batrachospermum 



into Prothalliform Branch „ 503 



Hauckia, a new Genus of PalmellacecB ,, 503 



Formation of the Sporangia in Halimeda „ 504 



Spirogyras of the Environs of Paris ,, 504 



Sykidion, a new Genus of Unicellular Algce „ 505 



Chroolepusaureum „ 505 



Arctic Diatomacece „ 506 



Classification of Schizonema „ 506 



Diatoms in thin Rock Sections. (Kgrs. 114-15) „ 507 



Movements and Vegetative Reproduction of Diatoms . . . . „ 509 



Uses of the Study of Diatoms „ 512 



Diatoms as Test Objects „ 543 



Fructification of Chcetopteris pilumosa Part 4 644 



Variegation and Cell-multiplication in a Species of Entero- 



morpha „ 645 



Fcdlacious Appearances in Fresh-vnter Algce „ 646 



Absorptive Organs of Batrachospermum „ 646 



New Zealand Desmidiece „ 647 



Division of Closterium intermedium „ 648 



Schmidt's Atlas of the Diatomacece „ 648 



Van Heurck's Synopsis of Belgian Diatomacece „ 648 



Delogne's Belgian Diatoms ,, 648 



Peculiar Structure of Isthmia enervis „ 648 



Motion of Diatoms „ 649 



Fossil Organisms in Meteorites Part 5 722 



Marine Algce of New England ■ „ 782 



North American Algce „ 782 



Abnormal Fructification in the Floridece „ . 782 



Congenital union of growth on the Thallus of the Pollex- 



feniecB „ 783 



Structure of Terpsinoe „ 783 



Remarkable Vital Phenomenon in the Adriatic „ 785 



Uses of Diatoms ,, 785 



Str ice of the Diatomacece „ 787 



Endophytic Algce „ 801 



Diatoms from Peruvian Guano. (Plate XI.) Part 6 865 



Algological Notes „ 929 



Sexual Reproduction of Pha:osp)orece „ 929 



Red Colouring Matter of Chlorophycece „ 930 



Studies on Vaucheria ,, 930 



Parasitism of Chlorochytrium „ 931 



New Diatoms „ 931 



Fossil Diatoms „ 931 



Periodical and Massive Appearance of Diatoms „ 931 



Homeocladia and Schizonema „ 931 



