13 God. 
Subject Index. 
0819 
Hydra 8pp., comparative resistance 
to C0 2 ; behaviour of the zoochlorellae 
in relation to the egg in darkness ; 
Had2i. 
DEVELOPMENT. 0815 
Growth and morphogenesis. 
Metameric growth, Porites ; Bernard, 
2 . 
Ober den Septennachwuchs der 
Eupsamminidae ; v. Marenzeller. 
Morphogenie der Rugosa ; Jakowlew. 
Histogenesis. 
Spicule formation, Alcyonium digita- 
tum ; Woodland. 
Reproduction. 
Ueber Knospung von Hydra juaca ; 
Hertwig. 
(Colony-formation and stolonization in 
Hydroids ; BiUard, 3.) 
Asexual reproduction, Limnocnida 
tanganioac ; GUnther. 
Reproduction of Metridium margina- 
tum by fragmental fission ; Hammatt. 
Asexual reproduction, Schizocladium 
ramoaum ; Browne, 3. 
Reproduction, Microhydra ryderi ; 
Browne, 3. 
Regeneration. 
Experimental Btudy of light as a factor 
in the regeneration of Ilydroids ( Euden - 
drium ); Goldfarb. 
Form regulation in Cerianthus\ re- 
generation and proportion ; Child. 
Regeneration in Rhizosboma pulmo ; 
Hargitt, 3. ; in Metridium , Hahn. 
Ilydranth-forination and polarity in 
Tubularia ; Morgan, 1. — An attempt to 
analyze the phenomena of polarity in 
Tubularia ; Morgan, 2. — Experiments on 
polarity, in . Tubidqria ; Morgan and 
Stevens. 
Dissogony. 
A new tropical Ctenophore ( Dogielia ) ; 
Fedaschenko. 
Oogenesis. 
The organization and early develop- 
ment of the egg of Clara leptoatyla ; 
Hargitt, 1. 
Maturation and fertilization. 
Maturation and fertilization of ovum, 
A lcyonium digitatum ; Hill. 
Embryology. 
Experimental embryology, Hydra 
Hadzi. 
Development of Eudcndrium ; Cong- 
don. 
Cunina proboacidea, Entwickelung ; 
Stschelkanowzew. 
Medusa-buds, CunoctanUia foicleri 
sp. n. ; Browne, 2. 
Rearing Aurelia aurita and Pelagia 
perla ; Delap, 1. 
(Embryog6nie des Ilexactinidos ; 
Faurot.) 
Actinien-Larven ; Carlgren, 1. 
Development . of recent and fossil 
corals ; Duerden, 2. 
Early stages in Paleozoic corals; 
Gordon, C. E. 
Sideraatrea radiana and its post-larval 
development (by J. E. Duerden, review 
of); W. 
Viviparity. 
Lebendiggebarende Arten von Al- 
cyonaceen ; Thomson und Henderson, 2, 
3. 
ETHOLOGY. 0819 
Habits; behaviour. 
■Behaviour of Metridium ; Allabach. 
Behaviour of Gonionemua ; Morse, also 
Yerkes. 
