CONTENTS. XIX 



BOTANY. 



GENERAL, 



Including the A.natomy and Physiology of Seed Plants. 



Cytology, 



including' Cell-Contents. 'agk 



Trondle, A. — Reduction-division and Synnpsi'' 171 Spirogyra *J0 



Wilson, R. B. — Cytology in Relation to Genetics 319 



GuiLLiEKMOND. A. — Identity of ^' Mitoclioudrias " and Leucoplasts :!19 



'■ Mitochondrias" of Sexual Cells 412 



Lewitsky, G. — Chondriosiimes in Plant-cells 530 



„ „ Ghloropla^t-formdion 530 



FoRENBAOHER, A. — Origin of Chloroplasts 530 



LiTARDiilRE, R. DE — Nuclcdr Division in the PolypodiacesB 531 



Heilbkonn, A. 1 i. — Plasma-streaming in relation to Statoliths 531 



Rtjhland, W. — Plasma- membrane of " Uttrafilter'' 532 



Negeu, F. W. — Improved Iodine-test 532 



MoNTEVERnE, N.. & W. LiDBiMENKO — Chlorophyll-formation ti25 



Structure and Development. 

 Vegetative. 



PiCADO, C. — Epiphytic Bromeliacese 60 



LiNEBAUER, K. — Epidermis and Respiratory Apparatus of the Broineliacem .. .. (j1 



Chamberlain, C. J. — Morphology of Ceratozamia 104 



VViELAND. G. R. — American Fossil Cycads. VI. 319 



HoLDEN, Ruth — Anatomy of the Sainndales 320 



Parmentiek, P. — Anatomy of the Juglandacea' .. 320 



FucHSiG, H. — Comparative Anatomy of the Lilioidepp 412 



Rldolph, K. — Stomata of Palm-leaves 532 



Moreau. L. — Anatomy of Pogoni a 533 



BuRGERSTEiN, A. — Distinctions hetween the Wood of Populus and Salix "133 



VoiK, V. — Pneumntodes of Begonia •>25 



Le Blanc — Diaphragms of Air-catnties in Plants •i2tl 



PuECH, G. — -Anatomy of the Asclepiadex 02(5 



Guillaumin, A. — Syncotyly and Mo7io<otyhj among Dicotyledons .. <i26 



Reproductive. 



Wieland, G. R. — Seed-structures of American Fossil Cycads fil 



WoODBCRN, W. L. — Emhryo-sac and Endosperm in Seedless Persimmons <)2 



Goebel, K. — Paired Leaf-formations .. 191 



Gatin, C. L. — Embryos of Zing iheracex and Marantacex 195 



Sharp, L. W. — Embryo-sac of Physostcgia 195 



Stevens, Neil K. — Morphology of Seed of Buckwheat 195 



Bkown, W. H., & L. W. Shaup— Embryo-sac o/ ^/jjpa^^/js 321 



MoDiLEWSKi, J. — Anomalous Development of the Embryo-sac of Fiiphorhiacese .. 321 



Physiology. 

 Nutrition and Growth. 



MONTEVERDE, N., & W. LUBIMENKO — rWorop?iy/i-/or/Hrt</oft 62 



MaoDouqal, D. T.— Para«i<is7n ' 196 



Molliard, M. — Is the Soil a Direct Source vf Carbon "l 1'.'6 



Livingston, B. E., & A. H. EsTABROOK— /StowiaiaZ iWoremeM^ t» Pia7t<8 321 



h 2 



