Physiologie der Zellen, Gewebe und Organe. 177 



the Stoma. The cause of this peculiarity is unknown, but when cuttings from 

 the plants were placed in a warmer house and liberally watered very few occlusions 

 were formed. Gates (London). 



51 9) Takeda,H. (London, Royal College of Science), Atheory of„transfusion- 

 tissue". In: Annais of Botany, Bd. 27, S. 359—363, 1913. 



Worsdell believed the transfusion-tissue of the leaf to be phylogenetically 

 derived from the centripetally formed xylem of the vascular bündle, and to serve 

 as an auxiliary conducting system, a view now generally held. The writer points 

 out difficulties in this view, and considers that the transfusion tissue is not a 

 modification of the centripetal xylem nor a conducting System. It is rather a 

 special kind of water-reservoir, and is derived from pericyclic parenchyma and 

 mesophyll. Hence it is not of phylogenetic value. Gates (London). 



620) Delf, E. M., Note on an attached species of Spiroyyra. In: Annais of Bo- 

 tany, Bd. 27, S. 366—868, figd. 2, 1913. 



The rhizoidal outgrowths by which the plant, probably S. adnata, is attached to 

 the substratum, were described. Gates (London). 



521) Fürst, Adaptive Fermentbildung. In: Umschau, S. 362—363, 1913. 



Beschäftigt sich hauptsächlich mit den Untersuchungen von A. von Tschermak, 

 welcher festgestellt hat, daß — wie das Blut — auch der Darmkanal die Fähigkeit be- 

 sitzt, auf entsprechende Reize hin neue Fermente zu bilden. 



Loeser (Dillingen a. d. Saar). 



622) Healy, D. J. and Kastle, J. H., The Internal Secretion of the Mam- 

 mae as a Factor in the Onset of Labor. In: Bulletin Nr. 160, Kentucky 

 Agr. Exp. Sta., S. 101—104, Feb. 1912. 



Experiments were performed by injecting pregnant guinea pigs with the 

 Colostrum of the normal cow as well as that of the cow suffering from partu- 

 rient paresis, and it was found that the Colostrum contains a substance or sub- 

 stances capable of bringing about abortion. Whether the substance or substances 

 is a hormone or a toxin can only be determined by further experiment, but it 

 is similar to a hormone in that it withstands heating to boiling for a short time. 

 It is evident from these experiments that there is a correlation between the 

 mammary glands and the foetus, in that the internal secretions of the gland sti- 

 mulate the mother to labor and the birth of the offspring. Pearl (Orono). 



523) Kastle, J. H. and Healy, D. J., The Toxic Character of the Co- 

 lostrum in Parturient Paresis. In: Bulletin Nr. 160, Kentucky Agr. Exp. 

 Sta., S. 91 — 100, 1912. 



The effect of the first Colostrum of a cow, obtained during an attack of par- 

 turient paresis, was tried npon guinea pigs. The first Colostrum of the normal 

 cow, fresh milk from the Station herd, the urine of the normal cow and the first 

 urine of a cow suffering from parturient paresis, as well as other substances were 

 also included in the experiments. The results showed that the substances injec- 

 ted from the normal cow caused no serious disturbance. Death resulted from the 

 injection of the Colostrum of the cow having parturient paresis and the post 

 mortem and microscopic examination of the organs showed the same pathologi- 

 cal degeneration and changes that are characteristic of eclampsia. 



Pearl (Orono). 



524) Healy, D. J. and Kastle, J. H., Parturient Paresis (Milk Fever), 

 and Eclampsia. In: Bulletin Nr. 160, Kentucky Agr. Exp. Sta., S. 83—90, 1912. 



Zentralblatt f. Zoologie, allgem. u. experim. Biologie. Bd. 3. 12 



