25 



Petersen, 0. G., The Cod [Gadiis c aliar ias) . With 1 table, in: Rep. Dan. Biol. 

 Stat. in. p. 19—21. 



Occurrence, numbres, size. — The eggs float in different places in water of 

 different salinity. 

 Pollard, H. B. , Observations on the Development of the Head in Gohius ca- 

 pito. With 2 pis. in: Quart. Journ. Micr. Sc. Vol. 35. P. 3. p. 335—352. 

 The neural axis terminates between the optic stalks. An indentation at this 

 spot indicates a rudimentary neuropore. Mouth and hypophysis arise as solid 

 paired ingrowths of ectoderm. The jaw muscles do not arise from the »Seiten- 

 platten«. 

 Zirkaldy, J, W. , On the Head Kidney of Myxine. With 1 pi. in: Quart. 

 Journ. Micr. Sc. Vol. 35. P. 3. p. 353—357(359). 



In the younger stages the organ consists of numerous tubules opening at one 

 end into the pericardium, at the other into a main duct. Approaching maturity a 

 mass of tissue much ressembling lymphatic tissue is formed, richly provided with 

 bloodvessels. The organ may be regarded as a stage in its phylogenetic re- 

 duction. 

 Petersen, 0. G., The Flounder [Pleuronectes flesus) . With 1 table, in: Rep. 

 Dan. Biol. Stat. IH. p. 18—29. 

 Local occurence, size. 



The common Dab [Pleuronectes limando), ibid. p. 16 — 18. 



Occurrence, periods, size. (With a table.) 

 Spinachia vulgaris (an annual fish), ibid. p. 23 — 26. 



In May- June nests are build ; after spawning the fish dy (June), the young ones 

 survive during the winter, lay eggs in June and dy. 

 Blanc, Henri, Étude sur la fécondation de l'oeuf de la Truite. Avec 1 pi. in: 

 Ber. Naturf. Ges. Freiburg i. B. 8. Bd. (Festschr. f. Weismann.) p. 163 

 —191. 



La Polyspermie est l'exception. L'expulsion des globules polaires n'a rien à 

 faire avec la fertilisation. Une réédification du noyau précède la formation du 

 premier fuseau de segmentation. 



b) Âmpliil)ia. 

 Morgan, T. H., and Urne Tsuda, The Orientation of the Frog's Egg. With 

 2 pis. in: Quart. Journ. Micr. Sc. Vol. 35. P. 3. p. 373—405. 



The less pigmented half of the egg shows more rapid development, and there 

 the blastopore makes its appearance, at a short distance only from the group of 

 large cells around the lower pole. The embryo when first outlined on the egg, 

 covers, anterior to blastopore about one third of the periphery of the egg. Expe- 

 riments with injured eggs. 



c) Reptilia. 

 Phisalix, 0,, et G, Bertrand, Sur la présence des glandes venimeuses chez la 

 Couleuvre [Tropidonotus natrix et viperinus\ et la toxicité du sang de ces 

 animaux, in: Compt. rend. Ac. Sc. Paris, T. 118. No. 2. p. 76 — 79. — 

 Extr. in: Revue Scientif. (2.) T. 1. No. 3. p. 89. 



Nach Versuchen an Meerschweinchen enthalten die Oberlippendrüsen und das 

 Blut Gift (Echidnin). Die Immunität gegen Viperngift beruht auf dem Vorhanden- 

 sein des Giftes im Blute. 

 Siebenrock, Friedr., Das Skelet von Uroplates ßmhriatus Schneid. Mit 1 Taf. 

 u. 2 Abbildgn. im Text, in : Ann. k.k.Naturhist. Hofmus. (Wien), 8. Bd. 

 Hft. 3/4. p. 517—536. 



Eingehende Beschreibung sämmtlicher Knochen. Schädel characteristisch; 

 Schultergürtel und Sternocostalapparat von dem der Geckoniden verschieden. 



