42 L'ANNE BIOLOGIQUE. 



Hegner (R. -W.) and Russell (C. P.)- Differoitifil mitoses in Ihe grrm-ccll 

 ci/r(e of DineuU's niijrior. (Proceed. Nat. Acad. Se. Etats-Unis, II, \Y> 1 , 

 juillet, 36-360, 6 fig.) * [47 



Held(Hans). Unlcrsnchinifjeniiher den Vorgang der Be[rachtung. I. Der 

 Anleil (les Proloplasmas an der Bcfrurhlung von Ascaris megahcephala. 

 (Arch. mikr. Anat., LXXXV, Al)t. II, 1G6 pp., 6 pi.) [r>2 



a) Kylin(Harald). Uber die Befruchtung und Heductionsleilung bei AV- 

 malion multifiduiii. (Berichte der deutschen botanischen Gesellschft, 

 XXXIV, 257-271.) [50 



Ij) (j/jer den Bau der Spermalozoiden der I-vracern. (Berichte der 



deutschen botanischen Gesellschft, XXXIV, 194-201.) [:)l 



a) Lawrence (John W.)and Riddle (Oscar). Studies on tite physiologg 

 ofrejn-odiicfion in hirds. VI. Sexua.l diffrences in Ihc fat and phosjdun-us 

 content of the Idnod of foinis. (Ibid., 430-437.) . [Voir Riddle 



Ij) Studies on Ihe physiology ofreproduclion inbirds. VII. Va- 

 riations in the chemical Compusition of reproductive Tissues in relation lo 

 variations in funclional activily. (Ibid., XLIl, 151 162.) [Ibid. 



Levy (Fritz). Ueber Copulationsvoryange (?) bei Spirochaita obermeieri. 

 (Arch. Protistenkunde, XXXVl, 362-363, 1 fig.) [57 



Lillie (Frank R.). The history uf the Ferlilization problem. (Science, 

 N. S., XLIII, 39-53.) [52 



Long (J. A.) and Quisno (J. E.). The ovulation period in rats. (Science, 

 1er dc.,795.) ' [Analys avec le suivant 



Long (J. A.) and Smith (H. P.). Ovulation in mice. (Science, 1'' dcem- 

 bre, 796.) [Chez les rats, 

 ovulation tous les 10 jours en moyenne (femelles tenues loin des mles); 

 chez les souris, ovulation tous les 17 1/2 ou 18 jours. H. de Varigny 



Mohr (Otto L.). Sind die IJelerochromosomen u:ahre Chroinosoni'en ? Un- 

 tersurhunqen Uber ihr Verhalten in der Ooogenese von Leptophyes puncta- 

 tissima. (Arch. f. Zellforschung, XIV, 26 pp., 1 pi., 2 fig.) [48 



Nothnagel. (M.). Beduction divisions in the pollen mother cells ofAllium 

 tricoccum. (Bot. Gaz., LXI, 453-476, 3 pi.) [48 



Rappoport (T.). Zur Spermalogenese der Siisswasser-Tiicladen. (Arch. 

 f. Zellforschung, XIV, 26 pp., 4 fig., 1 pi.) [45 



a) Riddle (Oscar). Studies on the physiology of reproduction ia birds. I. 

 The occurrence and measurmenl of a sudden cliange in the rate ofgrowlh of 

 avian ova. (Amer. Journ. Physiol., XLl, 387-396.) [47 



l)) _ Studies on the physiology of reproduction in birds. III. On themeta- 

 bolism oftheegg-yolkofthe fond during incubation. (Ibid., 409-418.) [47 



Riddle (Oscar) and Basset (Gardiner G.). Studieson the physiology of 

 reproduction in birds. V. The e/fect of alcohol on the Size of the yolk of 

 Pigeon' s egg. (Ibid., 425-429.) ' [47 



Russo (Achille). // differenziamente dei gameti in Criptochilum Echini 

 Maupas. (Monit zool. Ital., XXVil, N 3-4, 75-77, 1 pi.) [50 



Schneider (Kurt). Die Entwicklung des Eierstockes und Eies von Dei- 

 lephila euphorbi. (Arch. f. Zellforschung, XIV, 65 pp., 2 pi., 26 fig.) [46 



