CONTENTS. 
I. Giand-cells of Internal Secretion in the Spinal Cord of the Skates. By Cart Caskey 
SPRIBNE, OS plates ANG a NEULCH ooo oc cS «sis o's «s,s Gemeis ooh stn Ben one we 
Beir PPRRIRER TONER os 2 Sings, ot eee YAR Sale are Soe a> Zo Se oe ee one Mone ees 
it MITRE te eee Ne oe ican Oi oieisecaete es oe ae ae 
RN aR MEARNS ps orig te ayes Pte ets STE RECUR © aries BINNS > SE ae ee eS 
(SSIS RE) ELT EN Ry Lea ee eS 2 at Ra A ns Ac Se 
CCRT PIV EYE Bea maacicis  oitisicpav paidigee nee co oe Rssine a LE aes aoe ee ee 
Ieee AO CLIN EI MEU ONIN rat ess ih rence kis diese bas ate ease Ses a On ee 
Phagocyte Hypothesis and Vital Staining Experiments...................... 
Chemical Nature of the Granules. . 3.505256). oe ns coo ca behav oe te ene 
Electrical Stimulation of the Spinal Cord.................. 0.0. cc cece cece 
Pilocarpine Stimulation of the Spinal Cord..............0...cccceeecccceee 
Atropine Stimulation of the Spinal Cord................. ccc cccceccccccecs 
Discussion of Results from Spinal-Cord Stimulation........................ 
Piece of Amputation Ot the: Uae: oo os on. cs we, a1s.: > dain s eked oe ode 
eR GION 505: Sys dete scare 28s, aah een oss Goth a ReMAS came ute ocean nae 
Pipes tied Ol ENV ES MeALION::, 65.55... oe acs 1 25k: he seo. We av co coe ee oe oe 
SLOT? 771s 1g Zep PaO el gto SRR ry i= NE Sri ea TR ry ental WR chet ol arte. 
lI. Structure and Ejaculation of the Spermatophores of Octopus americana. By 
CIEMAN Ay Dew, Tampines ores oo ee ese crs coihs Soa ass c as ete 
PENNE os On Sisieas oh rcaean ni AD a arnia oe Sluice e ot hi oe noe mere eee ae tee ae 
iD SCE FT 1 (eR le aa A a Ty Era a rl 
Si Apes Meee OO Tg cs lr as are ln Haney cia che SS NASI Hale Ss SPO ob are alee Bee 
Ill. Distribution of the Littoral Echinoderms of the West Indies. By Husert 
PARMEANKACNCAED YS, OME ER 267 Sst ccs) 5 sont « two ee atecaiwia s Ba SanhE Bee 
OPEN GSI Bic 3), oS) 2 (oa Pa a 
HPRMOIGeL | eet RMON et Pe i SG NE Soe yal, stolons Hacisbeic eon 
IJ. Littoral Echinoderm Fauna of West Indian Islands and Adjacent Regions. 
12 CC) 9: CS a im ea IA ah C8 a = ra ee et 
EEO RAS soos 5s dice ete ce ieee SAG On G2 ie aie i ee 
RA AARMREN Shc oar = Gin SERS SIS Ook ahah APRA eh soe ZOE 
RUNRer aE ees MRT tS Tis asia Wucnhie eleva oa te ER saree ea eee 
MSC ITER ey Sigh Sy. die sp. 3 dian stolons OS Re eh ee 
SESS AE AP ISL TAIL GIONY «55,9 Sis ais.s d a-s/os SY ors beeen oes wake Rees 
Emp E LUST OTe EAGER oid 5 <.5ic) a's so Retn sae ps6 See Atle BOLI Ree 
