104 BIBLIOGR API! Y . 



Juue : — 



Congratulatory Address of the Academy to Professor Schwann on his Jubilee. 



Jul J- August : — 



Second communication on the ^nf/toeoa joo^(/acfmw collected during the voyage 

 of the ' Gazelle ' round the World. By Prof. Dr. Th. Studer. (5 plates. ) 



Austria. 



SlTZUNGSBERICHTE DER KaISERLIOHEN AkADEMIE DEB WlSSEN- 



SCHAFTEN.* Section I. Mathematics — Natural Science. Vol. LXXVII. 

 Parts 1 and 2 (January and February) : — 



The Undulating Nutation of Internodes. A contribution to the Theory of the 

 Longitudinal Growth of Plant-stems. By Julius Wiesiier. 



Note on the Kelation of Phloroglucine and some allied Bodies to the Lignified 

 Cell Membrane. By Julius "Wiesner. 



On the Degeneration of the Leaf-growth of some Amygdalese produced by 

 Species of Exoascus. By Emerieli Kathay. (1 plate.) 



Contributions to the fuller knowledge of the Tunicata. By Prof. C. Heller. 

 (6 plates). 



Parts 3 and 4 (Marcli and April) :— 



On the Embryology of Ferns. By H. Leitgeb. (1 plate.) 



On Peculiar Openings in the upper Epidermis of the Floral Leaves of Frun- 



ciscea macrantha, Pohl. By M. Waldner. (1 plate.) 



On the Origin of the Holes on the Leaf of Philodendron pertusum, Schott. 



By Frank Schwarz. (1 plate.) 



Part 5 (May) :— 



The Nostoc Colonies in the Thallus of Anthocerotese. By H. Leitgeb. (1 plate.) 



Eesearches on tlie Organisation of the Brain of Invertebrate Animals. Parts 

 I, and II. (Cephalopoda, Tethys, Crustacea). By M. J. Dietl. (10 i^lates.) 



Contributions to the Embryology of the Chastopoda. By Michael Stossich. 

 (2 plates.) 



Comparative Anatomy of the Seeds of Vicia and Ervum. By Dr. Gunther 

 Beck. (2 plates.) 



Kussia. 

 Bulletin de l'Aoademie Imperiale des Sciences de St. Peters- 

 BOURG.t Vol. XXIV., No. 4. 



The Development of Cephalodia on the Thallus of the Lichen Peltigera cqMhosa, 

 Hoffin. By M. Babikoff. (I plate.) 



* These will be hereafter referred to as ' Sitzungsberichte — Vienna Academy.' 

 t These will be referred to hereafter as ' Bulletin— St. Petersburg Academy.' 



