THE MICROBIOLOGY OF THE ATMOSPHERE 



Bacillus, anthracis, i6o 



— aureo/lavus, 135 



— aurescens, 135 



— {cereiis) Jiiycoides, 126, 135 



— cohaerens, 126 



— fluorescens litjiiefaciens, 153 



— fluorescens non-liqi(efaciens, 153 

 • — -fluorescens pulruhis, 153 



— fusiformis, 128 



— janthinus, 153 



— laterosporus (?), 126 



— megatherium, 126, 139 



— guietus, 135 



— sp., in stratosphere, 135 



— sp., in upper air, 139 



— submesentericus, 135 



— subtilis, 126, 128 



— terrestris, 135 



— tumescens, 126, 128 



Bacteria in air, diurnal periodicity of, 10, 112, 

 113, 116, 117 



— effect of rain on, iii 



— in marine air, 125, 126 



— in snow, 153 



— sampling of, 91, 104 



— take-off mechanisms of, 33, 129, 143, 158 



— upper air, 134-47 

 Bacteriology, development of, 6-7 

 Bacterium, no, 149 

 Badhamia ntricularis, 210 



Baker Lake, Canada, 141 



Ballistospores, 38, 117, 120, 196 



Balloons, sampling from, 93, 134, 135 



Baltic Sea, tree pollen over, 185-6 



Barberry, 46, 136 



Barbula fallax, 210 



Bartsia, pollination of, 42 



Basidiobolus, 37 



Basidiomycetes, spores of, PI. 6; see also 



genera and species involved 

 Basidiospore discharge, 37 

 Basidiospores, diurnal periodicity of, etc., 



117-20 



— in air, 84, 1 14-17, 1 19-23, 144, 158, 196 

 Bathurst, Cape, Canada, 140 



Bavaria, 134 



Beagle, Darwin's voyage in, 13 



Bean leaves, spore deposition on, 74 



Bellows mechanism of Gasteromycetes, 35, 86 



Berberis, 46, 136 



Berlin, 134 



Beta, pollination of, 43 



Betula, 15-16, 20-21, 43, 117, 127, 186, 212 



Biological warfare, 198 



— zone in upper air, 146, 147, 154, 197 

 Biotic factors, effect on the air-spora, 123 

 Birch, see Betula 



Bispora monilioides, 208 

 Blowing-away of spores, 34-35, 73-74 

 Blue-green algae, 184 

 Bodo, 109, 149 

 Bolbitius vitellinus, 210 

 Boletus badius, 17 



— chrysenteron, 210 



— felleus, 17, 210 



— scaber, 210 

 Bothnia, Gidf of, 186 



Botrytis, 34, 35, 116, 120, 123, 142, 145, 165, 

 208 



— cinerea at sea, 125 



— polyblastis, 82 

 Bottle-device air sampler, 93 

 Boundary layer exchange deposition, 81 

 Bouteloua, pollination, 42 



Bovista plumbea, 17, 19, 52-55 

 Brachy podium, pollination of, 42 

 Brachysporium, 139 

 Brachythecium rutabulum, 150 



— velutinmn, 150, 151 

 Bracken, see Pteridium 

 Brecknock Beacons, Wales, 127 

 Briza, poUination of, 42 

 Broad-bean leaves, deposition on, 74 

 Bromus, pollination of, 42 

 Broussonetia, pollination of, 43 

 Brownian diffusion, 60 



Bryophytes, 36, 39, 128, 140, 142, 150, 151, 



182, 184, 186 

 ■ — spores of, PI. 6 ; see also genera and species 



involved 

 Bryum, 151 



— argent eum, 151 



— pollens, 1 5 1 



Bubbler samplers, 96-97, 109 

 Buchloe, pollination of, 43 

 Bulgaria inquinans, 208 

 Buxus, poUination of, 43 



Calamagrostis, pollination of, 42 

 Calcutta, 7 

 Calluna, 42, 212 

 Calpoda, 109, 149 

 Calvatia gigantea, 31, 63, 71 

 Camarosporium, 137 

 Cambridge, England, 127, 136 



— Bay, Canada, 140 

 Canada, 140-6 

 Canadian Prairies, 137 

 Cannabis, pollination of, 43 

 Capillary impinger, 98, PI. 4 

 Cardiff, 115 



Caribbean Sea, 125, 137 

 Carpinus, 16, 20 

 Cascade impactor, 62, 99 

 Castanea, 43, 212 

 Casuarina, pollination of, 43 

 Catenularia, 126 

 Catkins, 43 



Caves, microbes in air of, 160 

 Cedar, Atlas, 180 



— Lebanon, 180 

 Centrifugal samplers, 98 

 Cephalosporium, 126 

 Ceplialothecium, 135, 139 

 Ceratodon purpureiis, 151 

 Ceratostomclla ulmi, 166 

 Cercospora, 122 



Cercosporella herpotrichoides, 35 

 Chaetomium, 12, 37, 120, 137, 139, 141, 208 

 Chenopodiaceae, 43, 117, 127 

 Chenopodium, 43, 212 



Chichester Harbour, 109, 121 

 Chlamydomonas nivalis, 38, 150 



238 



