616 
Oe (Say) and Busycon canalicu- 
latum (Linn.). The olfactory reactions 
of the marine snails Alectrion.......... 177 
Offspring. The influence of excessive sexual 
activity of male rabbits. II. On the na- 
turevoLr thew ene see eee 571 
Olfactory reactions of the marine snails Alec- 
trion obsoleta (Say) and Busyecon canali- 
Culatom (inns) hehe | )s =. oo ater oe 177 
Outmstep, J. M. D. The regeneration of tri- 
angular pieces of Planaria maculata. A 
SEU yw OO LALIEV ec soe ous oe tbe rete 157 
Organs of young albino rats underfed for 
various periods. Changes in the relative 
weights of the various parts, systems 
TA Pee es wicle viene’ Sivare oe esbarede oie eboees 301 
HYSIOLOGY of Ascidia atra Lesueur. 
I. General physiology. The........... 229 
Physiology of Ascidia atra Lesueur. II. Sen- 
sory splysiolozy.: “het: -4hetis. soto 261 
Physiology of digestion in the Blattidae. 
Hperiments on thes. .2.40-ce-.0+-55--2*- 
Planaria maculata. A study in poplarity. 
The regeneration of triangular pieces of.. 157 
Polarity. The regeneration of triangular 
pieces of Planaria maculata. A study in. 157 
Punctatum. Experiments on the develop- 
ment of the shoulder girdle and the an- 
terior limb of Amblystoma.............. 499 
ABBITS. I. On the properties of the 
seminal discharge. The influence of ex- 
cessive sexual activity of male......... 463 
Rabbits. II. On the nature of their off- 
spring. The influence of excessive sexual 
aetivaty on male... 1. 6. eek oe ete ee 571 
Rats underfed for various periods. Changes 
in the relative weights of the various 
parts, systems and organs of young 
alDINOMEE ES... Aa A tone geet 301 
Reactions of the marine snails Alectrion obso- 
jeta (Say) and Busyeon canaliculatum 
(Emmns)n Che olfactory... sence sce 177 
Reactions to light and to gravity in Drosophila 
andiatsamutants. Theioe.2.. .t.. shee- + 49 
Regeneration after exarticulation in Di- 
emyctylus viridescens. Some _ experi- 
TCEMLSIEO LIE... =:<).,> 0 Oa re ee ee 107 
Regeneration of triangular pieces of Pla- 
naria maculata. A study in polarity. 
FICS |... = Jibei SUR, «fale pee nemeerertete '< 157 
ANFORD, Etpon W. Experiments on 
the physiology of digestion in the 
LBIEKHAG io: 35 eae emi Mtoe MAResid 335 
INDEX 
Self-differentiating equipotential syster 
Experiments on the development of ths 
fore limb of Amblystoma,a............ 413 
Seminal discharge. The influence of excessiy 
sexual activity of male rabbits. I. O 
the propertiesiot theses pase ee eee 463 
Sensory physiology. The physiology o \ 
Ascidia) atrasbesueur ss Liew ace see eee 261 
Sex studies. XI. Hermaphrodite birds...... 1 
Sexual activity of male rabbits. I. On the | 
properties of the seminal discharge. 
The influence of excessive................ 
Sexual activity of male rabbits. II. On the 
nature of their offspring. The influ- 
Once (Of excessive aa: cece eee: ie eos 71 
Shoulder girdle and the anterior limb of Am- 
blystoma punctatum. Experiments on 
the development of the....,............. . 
Snails alectrion obsoleta (Say) and Busycon 
ecanaliculatum (Linn.). The _ olfactory 
reactions, of ‘the’ marine’.c7 2 = neces 177 
STEWART, CHESTER A. Changes in the 
relative weight of the various parts, sys- 
tems and organs of young albino rats un- 
derfed for various periods............... 301 
System. Experiments on the development 
of the fore limb of Amblystoma, a self- 
differentiating equipotential............. 413 
Systems and organs of young albino rats un- 
derfed for various periods. Changes in the 
relative weights of the various parts.... 301 
HYMUS feeding upon development, me- 
tamorphosis and growth due to a specific 
action of that gland? Is the influence 
(6) ENE AAR nee ern he Shasta Goh Sousa 135 
HLENHUTH, Epwarp. Is the influence 
of thymus feeding upon development, 
metamorphosis and growth due to a spe- 
Underfed for various periods. Changes in 
the relative weights of the various parts, 
systems and organs of young albino rats.. 301 
TIRIDESCENS. Some experiments on 
regeneration after exarticulation in 
Diemyctylus!: S67. sen a. ete ee oe 107 
EIGHTS of the various parts, systems 
and organs of young albino rats un- 
derfed for various periods. Changes 
AGhEe LEAVE so. Se sretave ce oe hoe eee ees 
Uy Cate saa si os sulodss scetees te ee 539 
