V. 1. 169 V. 4. 



Metamorphosis. 



Theoretical problems and general questions. 



D. Kernwachstum in verschiedenen Geweben wahrend der 

 Metamorphose bei Ephestia kiiniella (Ptychopoda se- 

 viata), (Lepidopteren). H. RISLER 



2. General investigations on metamorphosis. 



General subjects. 

 D. Metamorphose der Insekten. H. PIEPHO 



J. Control of metamorphosis. Amphibians. E. PADOA 



J. Ricerche sulla catalasi durante la metamorfosi. Anfibi. Nib. 2a. c. 



Mrs L. URBANI— MISTRUZZI 

 J. Effects of antimitotics on metamorphosis of Amphibians. 



S. LEGHISSA 



Hormones and metamorphosis, 



V. The influence of hormones on metamorphosis. Verre- 

 fcrafes. A. BER and A. ORLOWSKI 



V. Analyse der einzelnen unter dem Einfluss des Schild- 

 drusenhormons erfolgenden Differenzierungs- bzw. 

 Reductionsvorgange. Vertebraten. H. HARTWIG 



}. Thyroid gland in delayed metamorphosis of Xenopus 

 larvae. H. SUOMALAINEN and S. TOIVONEN 



J. fitude de Taction des antithyroidiens (thiouracil etc.) Ilia. 17. f. 

 au de la vie larvaire et de la metamorphose des Ba- 

 traciens. Discoglossus pictus. M. DELSOL 



3. Investigations of whole process o[ metamorphosis. 



D. Metamorphosis of the Cape Crawfish. Jasus lalandii 

 (Crustacea). C. von BONDE 



D. Metamorphosis of Tropinota hirta (Coleoptera). 



W. KLOFT 

 D. Metamorphoses. Insectes aquatiques. G. MARLIER 



4. Metamorphosis o[ special organs. 



D. Metamorphoseveranderungen der Epidermis und in- 1. 8. 



kretorischer Organe bei Panorpa (Insekta). 1.18. 



Frl. E. SCHWINCK 



J. Metamorphosis of the amphibian ear. E. WITSCHI 



}. Metamorphosis of the jaws and their muscles cor- I. 11. 



related with the changes in the animals feeding habits. I. 12. 



Bufo regularis. S. N. SEDRA 



}. An X-ray study of bone development in Rana clamitans 



during metamorphosis. Miss I. L. ANDERSON 



