CO ONT EON LTS XV 
HAMBURGER (H. J.) presents a paper of Mrs. S. VAN CREVELD and R. 
BRINKMAN: “A direct proof of the impermeability of the bloodcorpuscles 
of man and of the rabbit to glucose.” 1256. 
— presents a paper of Mr. R. BRINKMAN and Miss E. van Dam: “The 
significance of the concentration of calciumions for the movements of 
the stomach caused by stimulation of the N. vagus.” 1262. 
— presents a paper of Mrs. J. DE HAAN and S. vaN CREVELD: “The 
interchange between bloodplasm on one hand and humor aqueus and 
cerebro-spinal fluid on the other hand, studied from their sugar- 
percentages and in connection with the problem of combined 
sugar.” 1343. 
HAMBURGER (L.). On centres of luminescence and variations of the gas 
pressure in spectrum tubes at electrical discharges. 379. 
Heap of the population (On the index cephalicus and the absolute dimensions 
of the) of Holland. 103. 
Heart (On fibrillation of the). I. 319. II. On the relation between fibrillation 
of the heart and “Gehäufte” extra-systoles. 329. II. 533. 
Hein (S. A. ARENDSEN). Technical experiences in the breeding of 
tenebrio molitor. 193. 
HERINGA (G. C.). OMBREDANNE’s theory of the “lames vasculaires” and 
the anatomy of the canalis cruralis. 1209. 
HERWERDEN (Miss M. A. vaN). Concerning the influence of the adrenal 
cortex upon the growth and the reproduction of lower organisms and 
its presumable antitoxis action. 1339. 
Heux (J. W. N. Le). Explanation of some interference curves of uniaxial 
and biaxial crystals by superposition of elliptic pencils. 1223. 
Histology. M. W. WOERDEMAN: “An inquiry into the distribution of 
potassium-compounds in the electric organ of the Thorn-back (Raja- 
clavata)” 842. 
HOLLAND (On the index cephalicus and the absolute dimensions of the 
head of the population of). 103. 
Ho.tst (G.) and E. OosrerHuis. The so-called cyanogen-bands. 727. 
Homo .oaies (An involutory transformation of the rays of space which is 
defined by two involutory). 462. 
Homotocy (On the) of the M. marsupialis and the M. pyramidalis in 
mammals. 1119. 
HOMO NEANDERTALENSIS (On the significance of the large cranial capacity 
of). 1271. 
Hormones (On sensibilization to radioactivity by the action of). 838. 
HursHor (H.). The osmotic pressure, regarded as a capillary pheno- 
menon. 184. 
