pang VIL? | oe Hibrary of the Museum OF COMPARATIVE ZOOLOGY, AT HARVARD COLLEGE, CAMBRIDGE, MASS. Founded by private subscription, in 1861. SRE ALAA Deposited by ALEX. AGASSIZ. No. Bai ee oe Ce om a) yey ; ¥ etd { ven ie a re ee i) New Series, No. 149 (Vol. 38, Part 1); Price 10s. | ae yo 7 AUGUST, 1895. 1439 ity HE f= Z/ ra QUARTERLY JOURNAL OF ~MICROSCOPICAL SCIENCE. EDITED BY E. RAY LANKESTER, M.A., LL.D., F.R.S., Linacre Professor of Comparative Anatomy, Fellow of Merton College, and Honorary Fellow of Exeter College, Oxford. WITH THE CO-OPERATION OF ADAM SEDGWICK, M.A., F.B.S., Fellow and Lecturer of Trinity College, Cambridge; AND W. F. R. WELDON, M.A., F.B.S., odrell Professor of Zoology and Comparative Anatomy in University College, London; F gy ‘J 2 &*) Fellow of St. Fohn’s College, Cambridge. WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD. LONDON: . & A. CHURCHILL, 11, NEW BURLINGTON STREET. 1895. Adlard and Son,] Bin oe PATH Te S [Bartholomew Close. CONTENTS OF No. 149.—New Series. MEMOIRS : PAGE On the Variation of Haliclystus octoradiatus. By Epwarp T. Browne, B.A., University College, London. (With Plate 1) a The Collar-cells of Heterocceela. By Grorcn BippEer. (With Plate 2) : : f : : : 9 The Metamorphosis of Echinoderms. By Henry Bury, M.A., F.L.S., late Fellow of Trinity College, Cambridge. (With Plates 3—9) 45 A Criticism of the Cell-Theory ; being an Answer to Mr. Sedgwick’s Article on the Inadequacy of the Cellular Theory of Development. By Gitgert C. Bourne, M.A., F.L.S., Fellow of New. College, 137 Oxford : ‘ 4 : F : i F DEC 1895 New Series, No. 150 (Vol. 38, Part 2). Price 10s. ae NOVEMBER, 1895. THE QUARTERLY JOURNAL OF MICROSCOPICAL SCIENCE. EDITED BY EK. RAY LANKESTER, M.A., LL.D., F.B.S., Linacre Professor of Comparative Amatomy, Fellow of Merton College, and Honorary Fellow of Exeter College, Oxford. WITH THE CO-OPERATION OF ADAM SEDGWICK, M.A., F.RB.S., Fellow and Lecturer of Trinity College, Cambridge; AND W. F. R. WELDON, M.A., F.RB.S., Fodrell Professor of Zoology and Comparative Anatomy in University College, London; late Fellow of St. John’s College, Cambridge. WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD. LONDON: J. & A. CHURCHILL, 11, NEW BURLINGTON STREET. 1895. Adlard and Son,)] --~ a [Bartholomew Close. CONTENTS OF No. 150.—New Series. MEMOIRS: On the Distribution of Assimilated Iron Compounds, other than Hemoglobin and Hematins, in Animal and,Vegetable Cells. By A. B. Macatium, B.A., M.B., Ph.D., Associate-Professor of Phy- siology, University of Toronto. (With Plates 10—12) On the Structural Changes in the Reproductive Cells during the Spermatogenesis of Elasmobranchs. (From the Huxley Research Laboratory, Royal College of Science, London.) By J. E. S. Moort, A.R.C.S. (With Plates 13—16) . A ; Notes on the Fecundation of the Egg of Spherechinus granu- laris, and on the Maturation and Fertilisation of the Egg of Phallusia mammillata. By M. D. Hitt, B.A.Oxon. (With Plate 17) ; ‘ : Further Remarks on the Cell-theory, with a Rel to Mr. Bourne. By Apam Sepewick, F.R.S. { : PAGE 175 275 315 331 wa MAR 1° 1896 | New Series, No. 151 (Vol. 38, Part 3). Price 10s. JANUARY, 1896. THE QUARTERLY JOURNAL OF MICROSCOPICAL SCIENCE. ———— = EDITED BY K. RAY LANKESTER, M.A., LL.D., F.R.S., Linacre Professor of Comparative Anatomy, Fellow of Merton College, and Honorary Fellow of Exeter College, Oxford ; Corresponding Member of the Imperial Academy of Sciences of St. Petersburg, and of the Academy of Sciences of Philadelphia. WITH THE CO-OPERATION OF ADAM SEDGWICK, M.A., F.RS., Fellow and Lecturer of Trinity College, Cambridge; AND W. F. R. WELDON, M.A., F.R.S., Jodrell Professor of Zoology and Comparative Anatomy in University College, London; late Fellow.v, St. Fohn’s College, Cambridge. WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD. LONDON: ‘J, & A. CHURCHILL, 11, NEW BURLINGTON STREET. | 1896. Adlard and Son, [Bartholomew Close. CONTENTS OF No. 151.—New Series. MEMOIR: The Development of Asterina gibbosa. By E. W. MacBripz, Fellow of St. John’s College ; Demonstrator in Animal Morphology in the University of Cambridge. (With Plates 18—29) MAR f° 18y6 New Series, No, 152 (Vol. 38, Part 4). ~ Price 10s. FEBRUARY, 1896. THE QUARTERLY JOURNAL MICROSCOPICAL SCIENCE. EDITED BY EK. RAY LANKESTER, M.A., LL.D., F.B.S., Linacre Professor of Comparative Anatomy, Fellow of Merton College, and Honorary Fellow of Exeter College, Oxford ; Corresponding Member of the Imperial Academy of Sciences of St. Petersburg, and of the Academy of Sciences of Philadelphia; Foreign Member of the Royal Bohemian Society of Sciences. WITH THE CO-OPERATION OF ADAM SEDGWICK, M.A., F.R.S., Fellow and Lecturer of Trinity College, Cambridge; j AND W. F. BR. WELDON, M.A., F.B.S., Fodrell Professor of Zoology and Comparative Anatomy in University College, London; late Fellow of St. John’s College, Cambridge. WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD. LONDON: | J. & A. CHURCHILL, 11, NEW BURTINGTON STREET. 1896. Adlard and Son,] [Bartholomew Close. :. | hl 1 CONTENTS OF No. 152.—New Series. | MEMOIRS: 4 PAG The Early Development of Amia. By BasHrorp Dean, Ph.D., Columbia College. (With Plates 30—32) . é : . tho On Kynotus cingulatus, a new Species of Earthworm from Tmerina in Madagascar. By W. Buaxtanp Benuam, D.Sc.Lond., Hon. M.A.Oxon., Aldrichian Demonstrator in Comparative Ana- tomy in the University of Oxford. (With Plates 33 and 34) . 445 Notes on the Ciliation of the Ectoderm of the Amphibian Embryo. . By RicHarp AssHETON, M.A. (With Plate 35) . ‘ - 465 4 Ontogenetic Differentiations of the Ectoderm in Necturus. Study II. —On the Development of the Peripheral Nervous System. By - Juuia B, Pratt. (With Plates 36—38) . me : . 485 INDEX. i Ac : ; 5 : ; . 549 TABLE OF CONTENTS. E.T Browne del Coes 335 6 30 o C) Ea G a2 uy q Quart Fourm Moor Sci Vt, BENSPAL F. Huth, Litht Edin? Quart Gourn Mecr Sei. VA 388 NSLL2, Scale 10 so thousandths ofa . Pp “millimetre. GP, Bidder del F Huth, Litht Edin? ae = : Ki ° = , e _ -~ ® . - 1 °ig R * 7 © i al S 8 _ : \ . a “My é A ; “e "s A y 2 - a at P : ® j ‘ | \ a Wl is - 3 ig Luart Sourn Mor Sci: VA 3BNSGLE Ib Dors. F Ila 3 z Dors. ior ---Ula Lig. iG Dors. Il b&c-----{-- H.Bury del. F. Huth, Lith? Edin? Quart Sourn Moor Sci V BENS, bs -§-PoltarnVesicle Vent. Point of Closure --.--- ~--- eg of WR & Part of LBC. » .. Fees Orad Canuty F Huth, Litht Edint H Bury del cca ; - TEice H.Bury del Dors. Hydroced ---- --- Dorsal Organ Dorsal Organ - RBC. =e Quan Lourn Moor Sei VWs 39 NSB, I F Huth, Lith? Edin? , wae / Quant Fura Mir Sead 38 ISD SingpaseD: Radial Pouch of Stomach, H Bury, del . Quart Pourn.Mucr’Sce Vel BENSZE 7, Dors. R Fig.30 LBC Dorsac Organ? Dorsal Organ? x Wall of Stomach H Bury del F Huth, Lith? Bain® ‘ . , . J ‘ P es » a ° * ; 4 ox : y 5 Ne y : 1 : id : =) i” 7 7 7 : = id , ie ~ ; bs ‘ 1 * i 7 7 7 » 1 1 7 2 < é ‘ , 7 & 4 i i\ i . ' 1 H tf 7 » i ' * « > ae ; . ‘ ‘ - ' : i 2 ! 1 ® _ + ; hte ° . i 1 - Ld : ‘ oD e ri i ; j : 5 - 5 t i ’ : * 1 ) 4 ¥, , A ' 7 P : be ‘ / 4 ; . 4 i « 7 ' £ . . i \\ : ; ‘ - , . \ is) i ’ H os . i i : i i 1 a Li ~ As i , 1 ‘ en | y\ = " a = oy ' bee r, y re i é - f re 1 ’ 7 7 ‘ a, oP ' : ie ye 7 a aS a i; - a 3 a an ; ’ a, ] : - 7 7 Pas = Je§? ¥ : i ar] , aN aa i , ; . , 7 fi 6 i “er uJ , , . i 7 ‘ f * é - ‘ 4 : 5 wed a Fi (Na er ; aed! i ‘ utd Le — = _—_— -_—- —- - >». ot " ; “ - . as DO a Quart Fourn Mor’ Sci. Ve 38 USL, 8 Maudreporite (Basat 1) Fig. 38. Oc § fe Dorsocenrtras Basal § Basal 3 Dorsocentrat 2 / feeced Watervascular Ring Intestine Limit PREC Lumat of LBC. H.Bury del. F. Huth, Lith” Edin? \\, Quart Sourn. Mior’ Sei, We 38 NSP 9, fig. 46. Water vascelar Ring ‘ --Dorsat Organ ‘ Ea Be a Dorsal Sac =e Water-pore -- Dorsad Sac cone Dorsak Mesentery Boa eer Lett Body-cavety ... ~~ Anus Fig. #8. Dorsal Orgaw a Dorsad Sao Lig. 49. Lug. 50. HC ONE SIAL OA, Dorsat Organ. Dorsal Sae RB.C.--. Lett Body -caevity Asophagus LBC. HB del ury de) F Huth, Lith? Edin® ‘— Af + 7 o oe &. ie « * J = - — . ; > ; » ‘ ra / — ~~ + — > Ye ; 7 ni e < 7 ; - - q ¥ ' » * . : . ” 77 Tee Sat : 4 ; = ; . - g. : i r~ , — a L ‘ PS ee, sa ; 7 ; 7 Ps > a a = rs o. ” £ a 2 a 7 - i. . vi: a : ee : i, > 7 : ‘ * oT : 7 - ; ae ® b * . - ; 7 ry , » ; 1 * = , —_ # : e , ‘= sh) J = of i - : -_ : eo oe : . Poa on oo : j ¥ £ : 7 7 : 6) ; 2 j ¢ cy ; a * i * . = * . A Quart Sourn Mecr Sci: Vet I8NSL2, 10 | i! F. Huth, Lith? Edin® del. AB. Macallum F. Huth, Lith? Edin? A.B.Macallum del ee Quart Iourn Mor Sei Vt, 38NSFA,L2, 4 me Seoneenes 0,85°8 ° [oPorecreoes,. | MERE. | Cole sevens . ss saa | ni a] tees F Huth, Lith? Edin® S : : . : : F. Huth, Lith Edin® Moore del == F Huth, Lith’ Edin® Quart. Fourm Moor Sci, Vet, 8 NSTLB, I: Moore del. S aS) : x | f \ < MOL am, F Huth, Lith® Edin® Moore del Guart Foun Mior Sei: Vee 3B NSLA, 16 ‘ y Yeo J F.-Huth, Lith? Edin® Moore del Bee tas 4 bt NSPE L Hill del. ts hy faese a F.-Huth, Lith® Edin® Ss, _ eS a | | Quart. Tourn. Maor-Sc. WE 38 NS F816 1s. blastopore (lavval_anus) ’ hlastopore. | 2 A ‘stalk, (braeoval lobe). cB an B35) 3 = (8 al ee ae) SS, 5 Oe CS Rieader SS, is o0G% ] x x Re se 3 Edwin Wilson Cambridge ———————————— a i ts aT Se cotlom~__ ~-blastopore. Edwin Wilson Cambridge. 87 38 89 : é . S S 8 ' | | ! ' | \ t | \ 7 , TaN ea) Mr i oy, Cuart Sour. Macr- SCL Uot. SENS Lt £0 Edwin Wilson Cambridg 6 Gul 94. St Se 7 ae in ‘_, - — > ok ee ee a Quart Journ. MicrSci. Vol, 3B NELLA. rupee 69 rpc Edwin Wilson Cambridge Quart Journ MacrSci. Vol 30 NS PE 22 Edwin Wilson. Cambridge gut wall 95 per rpe ee vhy __---vhy Quart Journ Mier Sct. Vol SONSGE 23 collar pore ann Ube - Edwin Wilson Cambridge aa A = a Qua wii, Macr Scr. We NSPE 04. ~~ “pr germ env. Se rate nevv. cic ~~ loo 102 PY germ 106 /SONE Cire Z ph Sang circ Nerv. Cire nevd. circ 108 103 107 Edwin Wilson Cambridge Guart Journ. Micr Sec. Ul 38 USL O AMPHIURA 113 ——rhy, \---stone canal 117 Edwin Wilson Cambridge ! t 2 a a — Tes aed 3 = sS = SS Cy) = x7 ay y = = = = + Bad = JA LS a <= = - a Sy ' = = 1 oa yy ! Wu t \ is \ & 2 x = 3 s S 3 = . = / S do if 3 = 8 % \ ° = =. 116 > », ¥ * 8 + 7 : - i i ' i é - , a ath ; ' 7, aft Pd ma 7 Bh as, y . 1 bad " ror 1 : 78 : : ir oe . } then / ay Quart JSowrn. Maer Sci. Wl 38 NSPL26 septum ‘ ' { ' 1 1 1 ~ Ss = ss SS 3s s 122 Edwin Wilson Cambridge 26 end 1 Se eneLE! 121 2 eck 129 8 S i) H 1 i) _ --- ab gon 128 119 127 t Ss So Ss 8 Quart. Frurn. Mior-Sci. Vl NSPE A nerv, larv. - nervy. larv. * muse lary. | | nerv. larv. hist Edwin Wilson Cambridge. Quart Journ. MaicrSci. Vol ONS LE, 28 muse vely _ a 1c ctre tt eter atid 1 nev 7 ! f | | i : i ; : ; | sense cells | ; ! ; amoeod Edwin Wilson. Cambridge a Wee ae Ly - p % ee Quart Journ Moor Sei. Ul BNSF, 29 SANg.LUrc - MUSE. “amb, Must: amb. nerv.cive~-__ En = = coelomic nervous system. me ----- coelomic nervous system ASTERID. OPHIURID. Edwin Wilson Cambridge . fi i Quart. Four Mior Sei Vet 38 USF, 20 ae F. Huth, Lith? Edin® Graf & Dean del. Bashford Dean del. Quart Journ Mior’ Sci. Vi. 38 NEFA, 31 F. Huth, Lit = Ede ? > Quart, Fourn, Micr’ Sci: Vol, 38, NSPY, 82 F. Huth, Lith’ Edin? Bashford Dean del. W.B Benham del Quart. Sourru Mor’ Sci, Ul, 38 USP, 33, ep. Rings 2 nee Us . Segments 2 : F. Huth, Lith? Edin W.B.Benham del. ep cir : bt F. Huth, Lith? dint. +. 5 “ \ “ Quart Sour Muor Sei. Vel, 339. NS FR, 25. Ric.Assheton del F.Huth, Lith* Edin® i} if Y & .- Quart Sourn Mir Sci We 3 NSP 56. HERES Fig. 28. ae Platt del. ¥. Huth, Lith’ Edin* Quart, Fowrn. Mecr’ Si: Vol. 38 WSFA 3 Platt del. F. Huth, Lith? 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