INDEX. 



375 



Mitridso, Tviidula of, 190 

 ^lohr, Otto L., and Cbr. Wriedt, Heredi- 

 tary Brachyplmlangy, 187 

 ]Molander, Arvid R., Arctic Decapods, 56 



— Northern and Arctic Alcyonaceae, 60 



— Spitzbergen Alcyonacea. 60 



— Leptogorgia irramosa (Grieg), 380 

 MnidJia cinerea. Biologic Forms of, 21:2 

 Monocotyledons, Fibro- vascular Forma- 

 tions in, 336 



Monosporangial Discs in Genus Liagora, 



"I'll 

 Monsters Produced by X-rays, 181 

 ^loi'ypenny, J. H. G., Structure of Cbro- 



mium tSteels, 248 

 31onziols and Others, Pentastomid iu Man, 



200 

 ^loore, P)., and T. A. Webster. I'hoto- 



synthesis in Fresb-water Algfe, 342 

 ^lorgan, T. H.. Heredity, 304 

 ^losher. Edna, Classification of Lepidop- 



tera based on I'upal Characters, 318 



— Metamorphosis of Lepidoptera, 318 

 3Iosquitoes, 194 



Moss Exchange Club, 341 

 3Iosses, Biology and Ecology of, 77 



— Ecological Succession of, 339 



— of Madeira, 340 



— liamifieation of, 16 



— South African, 340 



^Moulding of Snow-stnothered Nursery 

 Stock, 244 



Moulds, Preservation of Artificial Cultures 

 of, 239 



Mules. Sterility of, 34 



Miiller, K., Liverworts of Germany, etc., 

 78 



:\Iultiniicleate Cells, 23 



3Iuratet. L., Trichocepiialus in Fiver of 

 Bat, 201 



^luiray, J. A., Cellular Changes in Carti- 

 lage Grafts, 247 



IMurrill, William A., Another New Truffle, 

 346 



— Field Meeting of Pathologists, 93 



— Fungi, 94 



^Muscid Larva Sucking Blood of Nestlings, 



320 

 IMuscids, Larval, Dorsal Blood-vessel in, 50 

 3Iusele, Blood-coloured, in Fish, 307 



— Smooth, Plexiform Sphincters of, 185 



— Fibres. Striped, 185 



Muscles, Pelvic, Comparative Study of, 309 

 Mutational and " Recapitulatory " Cliarac- 



ters, 306 

 Mya arenaria. Crystalline Style in, 314 

 ^Nlycetozoa, 246 



— and Disease, 350 



— Capillitia of, 67 



— from Cornwall, 246 

 Mycological Flora, Brazilian, 235 

 Mycotheca germanica, 93 

 Mycotorula turhidans Will. 346 



Myxidiiim ga'li, 334 



Myxophycese. 226 



— from Italian Somali land, 226 



N 



Nagel, K.. Carboniferous Plant-remains, 73 

 Xageotte, J., and L. Guyon, Regenerative 



Growth of Striped Muscle-filn-es after 



Traumatic Lesion, 185 

 National Physical Laboratory Report for, 



1919, 357 

 Naumann, E., Biological Sanii^les of Water 



from the deeper Water Strata, 82 



— Fresh-water Biological Institute at 



Aneboda, 82 



— Lietzensee near Berlin, 82 

 Navicula and Cyinbella, 80 



Neal, H. V., Neuromeres and Metameres, 



37 

 Neger, F. W., Fumagines. 238 

 Nematode, New, from a Baboon, 58 



— Parasites of Zebra, 201 

 Nemerteans. Sex Dimorphism in. 202 

 Nerves, Cranial, Branchial Segmentation 



of, 182 



— Peripheral, Pearly Development of. in 



Vertebrate Embryo, 182 

 Xeuromeres and ^Metameres, 37 

 Neurosoria pteroides (R. Bi.) Mett.. 75 

 Nickel-Iron Alloys, 352 

 NienburiT, W., Algse and Hyphse iu the 



Lichen-thallus, 100 

 Nishi, S., Comparative Study of I'elvic 



^luscles. 309 

 Noctiiuca, 207 

 Nor((enski('31d, Erik, Spermatogenesis iu 



Ixodes ricinas, 200 

 Norris, H. W., and Sally 1\ Hughes, 



Spiracular Sense-Organ in Fishes, 



310 

 North, F. J., On Syniogothrysis Winehell, 



and Certain Carboniferous Brachio- 



poda referred to Spiriferinad'Orbignv. 



353 

 Xorthrup, Zae, Bacterial Disease of Larv* 



of June Beetle, 320 

 Nuttall, George H. F., Lice, 197 



— Sexes in Ixodidse, 199 



O 



O'Conuell, ]Marjoi-ie, Orthogenetic De- 

 velopment of Costae in I'erisphinctinae, 

 45 



O'Connor, F. W., Intestinal Protozoa, 207 



Okada, Yaichiro, New Japanese Polyzna. 

 328 



Okuda, Yuzuru, Blood-coloured Muscle in 

 Fish, 307 



Oligochaets, North American, 57 



