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Arthur, J. C . — Uredinales collectedby Fred J. Seaver in Trinidad 210 
Eriksson, Jakob— Life of Puccinia Malvacearum Mont, within the Host Plant and 
on its Surface 210 
Overholts, L. O . — Diagnoses of American Porias : I. 210 
Luyk, A. van — Mycological Notes 210 
Ling, Arthur R., & Dinshaw Ration ji Nanji — Longevity of certain Species of 
Yeast 210 
Gwynne-Vaughan, Dame Helen — Fungi Ascomycetes, Ustilag inales, Uredinales .. 210 
Ramsbottom, J . — Orchid Mycorrliiza 211 
Kavina, Karl — Mycological Contributions 211 
Reinking, Otto A . — Higher Basidiomycetes from the Philippines and their 
Hosts: V. 211 
Murrill, William A . — Illustrations of Fungi : XXXI11 211 
Graff, Paul W . — Philippine Basidiomycetes : IV. .. 212 
Melin, Elias — Mycorrhizas of Pinus silvestris and Picea alba 212 
Zeller, S. M., & C. E. Owens — European Canker on the Pacific Slope 212 
Bijl, Van der — Septogloeum Arachidis, Leaf -spot of the Peanut in South Africa 212 
Spencer, Edwin Rollin — Decay of Brazil Nuts 212 
Whitehead ,!'. — Onion Smut . 213 
Sergent, Edm., & M. Beguet — New Disease of Dates 213 
Rhoads, Arthur S . — Pathology of Lupinus arboreus 213 
Hayes, H. K., & E. 0. Stakman — Besistance of Barley to Helminthosporium 
sativum 213 
Faris, James A. — Violet Root Rot (Rhizoctonia crocorum DC.) in the United 
States 213 
Fitzpatrick, H. M., & others — Ophiobolus causing Take-all of Wheat 214 
Lichens. 
Plitt, Charles C . — Notes on Lichens from Jamaica 214 
Shirley, John — Tliallus of the Genus Parmelia 214 
McWhorter, Frank P . — Destruction of Mosses by Lichens 214 
Wainio, E. A . — Japan Lichens 214 
Yasuda, Atsushi — New Japanese Lichen Species 215 
Moreau, M. & Madame — Different Forms of Lichen Symbiosis in Solorina saccata 
and S. Crpcea 215 
Mycetozoa. 
Wann, F. B., & W. C. Muenscher — Preliminary List of the Myxomycetes of the 
Cayuga Lake Basin 215 
Lister, G . — Mycetozoa Found During the Mineliead Foray 215 
Hadden, Norman G . — Mycetozoa at Porlock in October 1920 215 
Buchet, S., & others — French Flora of Myxomycetes 216 
MICROSCOPY. 
A. Instruments, Accessories, etc. 
Gage, Simon H . — Special Oil-immersion Objectives for Dark-field Microscopy .. 217 
Waran, H. P . — A New Form of Interferometer 218 
National Institute of Medical Research — The Massive Model Microscope .. 218 
Microscopic Optics 220 
