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Porifera. 



Lendenfeld, R. V. — Histology mid Nervous System of Calcareous Sponges ,. .. 1011 



Marshall, W. — Beproduction of Spongilla lacustris .. .. 1011 



Lentdenfeld, R. T. — The PhoriospongifB 1012 



VosMAEE, G. C. J. — Sponges of the ^ Willem Barents ' Expedition 1013 



Lendexfeld, R. V. — New Sponges from South Australia .. 1013 



Potts, E. — Fresh-water Sponge from Mexico 1014 



Lendenfeld, R. V. — Australian Sponges 1014 



Protozoa. 



Zachaeias, O. — Experiments on Formation of Pseudopodia 1014 



Maupas, E. — Coleps hirtus 1015 



BuKCH, G. J. — Supposed new Infusorian 1015 



Metsohnikow, E. — Eryihropsis agiUs .. 1016 



FxscH, C. — Flagellata and allied Organisms . , .... .. lOlG 



Butschli, O. — Marine Rhizopoda 1016 



FoLm, De — New Condition of Beticular Bhizopods 1017 



Lendenfeld, R. V. — Amoeba infesting Sheep 1018 



Wallich, G. C. — Critical Notes on Amoebae .. 1018 



„ „ Feeudocyclosis in Amoeba 1019 



BOTANY. 



A. GENERAL, including the Anatomy and Physiology 

 of the Phanerogamia. 

 a. Anatomy. 



liOfiW, 0.~Variovs Degrees of Besiftance in Protoplasm 1019 



Giltat, E. — Peculiar Structure of Protoplasm in the Paratracheal Parenchyma .. 1020 



Habtwich, C. — Tannin and Lignin in Galls 1020 



Gilbert, J. H. — Conditions of the Development and of the Activity of Chlorophyll . . 1020 



FiscHEE, A. — Sieve-tubes in the Leaves of Dicotyledons 1020 



Wilson, A. S., & G. MuEBAY—" S'ckraf/oids " o/ Poiato 1022 



ScHWENDENEE, S, — Laticifcrous Vessels 1022 



Kny, L., & A. ZiMMERMANN — Spiral Cells of Nepenthes 1023 



Costantin, J., & L. MoBOT — Fibrovasoilar Bundles of Cycadese 1023 



Penhallow, D. P. — Belation of Annual Bings of Exogens to Age 1023 



Heckel, E., & J. Chaeeybe — Anatomy of Pitcher-plants 1024 



Kamienski, F. — Vegetative Organs of Monotropa 1025 



Fleischer, E. — Protection of Leaves from excessive Transpiration 1025 



Beiozi, G. — Seterophylly of Eucalyptus globulus 1025 



Beyekinck, W. — Cectdomyia-gaUs on Poa 1026 



Bessey, C. E. — Opening of the Flowers of Desmodium sessilifolium 1026 



„ „ Inflorescence of Cuscuta glomerata 1026 



Coultee, J. M. — Belation of Ovary and Perianth in the development of Dicoty- 

 ledons 1026 



Meehan, T. — Elasticity in the Fruit of Cactacese . . .. 1027 



„ „ Use of Spines in Cactuses .■ .. .. 1027 



)8. Pliysiology. 



Stbasburgee, E, — Theory of Descent . . .. 1027 



Stuetevant, E. L. — Hybridization and Cross-breeding of Plants 1028 



Foeeste, A. E. — Fertilization of the Wild Onion 1028 



Baenes, C. R. — Fertilization in Campanula americana 1028 



DucHARTEE, P. — Influence of Want of Moisture on the Groivth of the Chinese Yam 1029 



BuEEiLL, T. J. — Mechanical Injury to Trees by Cold 1029 



Jamieson, J. — Essential Food of Plants 1029 



Maetin, S. — Digestion of Proteids in Plants 1030 



H.AiiSBT!f, A.— Ferments and Enzyma 1031 



Vesque, J. — Ascent of Sap 1031 



RiscHAWi, L. — Galvanotropism 1032 



Hansen, A. — Transpiration-currents .. 1032 



Knop, W. — Absorption hy the Plant of Non-nutrient Substances 1032 



B. CRYPTOGAMIA. 



Cryptogamia Vascularia. 



Soheodt, J. — Bursting of the Sporangium of Ferns and the Anther of Flowering 



Plants 1032 



Lachmann, P. — Boot-organs of Nephrolepis 1033 



BowEE, F. 0. — Apex of the Boot in Osmunda and Todea 1033 



Peantl, K. — Structure and Classification of Ophioglossaceie 1034 



BowEB, F. O. — Morphology of Phylloglossum Drummondii 1034 



