Une combinaison chimique de la fertilisine

Summary The fertilizin of sea-urchins combines with-lipoproteins of mammals sera in the presence of calcium ions. It is suggested that a combination of this type occursin vivo during the sperm-fertilizin interaction.     

Ultrastructures nerveuses dans le ventricule du c∄ur de Grenouille

Summary In the basal part of the ventricle of the heart ofR. esculenta axon and synapse show granules of catecholamine type. The fact is tentatively related with the phenomenon of ventricle escape.     

Radio-intervention sur animal vigile libre

Summary Intramuscular injection of Cardiazol to free and wakeful dogs is effected by a hertzian device and a crisis is produced.     

Persistance d'un train d'ondes électriques ternaire dans toute entité fonctionnelle isolée du cœur deRana esculenta

Summary An original, highly quantitative and sensitive method designed to study the automatism of isolated, non-perfused, contractile systems has been especially applied to electrical analysis of frog heart in prolonged survival. It was established by systematic sections that every functional entity as elementary as the sinus venosus, produces a ternary electrogram withP-R-T deflexions. In view of these results, every theory of the ECG has to be reconsidered.