CONTENTS. XIX 



PAGE 



Proposed New Genus of Fungi— Peniophora No. 7 920 



Vine Fungi » ^^0 



Propagation of Cluster-cups » 920 



Onion-smut, Urocystis Cepidce » 9-1 



Lagenidium RahenJiorstii, a new Phycomycete „ 921 



Protonvjces graminicola >) 9-4 



Conidial Fructification in Mucorini „ 922 



Beech Disease, Phytophfhora Fagi „ 923 



Berggrenia — Nevi Genus of Discomycetes „ 923 



Microphytes in the Blood and their relation to Disease . . „ 924 

 Crenothrix polyspora, the Cause of the Unwholesonicness 



of the Berlin Water „ 925 



Fungi Parasitic on Fungi „ 926 



Poison of Marsh Fever » 926 



Development of Bacteria jj 927 



Experimental Researches on a Leptothrix ,, 928 



Antidote to Bacteria-poisoning in Frogs ,, 928 



Sugar-refining Gum, Leuconostoc mesenteroides .. .. „ 928 



Excrescences on the Root of the Alder „ 929 



liiclienes. 

 Lichens, Bacteria, Bacillus Organisms, and the Lowest 



FormsofLife No. 1 69 



Development of Cephalodia on Lichens „ 78 



Relation of Lichens to Algce and Fungi No. 3 311 



Observations on Microgonidia No. 5 603 



Leightons Lichen Flora .. 604 



Microscopical Slides of Lichens „ 604 



Lichenological Review No. 6 760 



Vitricole Lichens and the Schioendenerian Hypothesis . . No. 7 929 



Parasitism of Lichens on Mosses „ 930 



Colorific Properties of Lichens „ 930 



Microgonidia m 931 



Algae. 



Lichens, Bacteria, Bacillus Organisms, and the Lowest 



Forms of Life .. , No. 1 69 



TJie Sexvxil Process in Diatoms „ 93 



Germination of the Spores of Yolvox dioicus „ 95 



The AUjLC of the White Sea No. 2 173 



Life-History of the Diatomacece j? 181 



Movements of Diatoms and Oscillatoriea; „ 182 



Discosporangiiim, a New Genus of Phoiosporea; ,, 186 



Reproduction of Uloaceoe », 186 



Nostoc-colonies of Anthocerotece „ 187 



Parasitism of Notommata on Vaucheria No. 3 291 



Floating Alga forming Scum on tJie Surface of Water .. „ 310 



Thuret and Bornefs ' Phycological Studies' „ 311 



Morphology and Biology of tJie Phycochromacex . . . . No. 4 456 



Halosphcera, a New Genus of Unicellular Algce. {Plate XVL.) „ 458 



Black Mildew of Walls , 459 



