THE QUARTERLY JOURNAL OFMICROSCOPICAL SCIENCE

Joint Editors:C. F. A. PANTIN, Sc.D., F.R.S. JOHN R. BAKER, D.Sc.

Third Series, No. 22Contents of Volume 95,

MONTAGNA, W., EISEN, A. Z., and GOLDMAN,A.S. The Tinctorial Behaviour of HumanMast Cells.

RABINOVTTCH, M., MOTA, I., and YONEDA, S.Note on the Histochemical Localizationof Glycogen and Pentosepolynucleotidesin the Visual Cells of the Chick {Gallusgallus).

DILWORTH, S., and APPLEYARD, H. M. ASharpening Machine for a New Type ofMicrotome Knife.

Mn-LOTT, N., and GARDNER LYNN, W. TheEffect of Phenylthiourea on Pigmentationby Melanin in the Developing Frog,Eleutherodactylus martinicensis.

BREWER, D. B. Histological and Polariza-tion Studies of the Brush Border of theProximal Convoluted Tubules of the RatKidney.

Part 1, March, 1954JONES, W. C. The Orientation of the Optic

Axis of Spicules of Leucosolenia complicate!.WOLFE, L. S. The Deposition of the Third

Instar Larval Cuticle of Calliphora ery-throcephala.

WOLFE, L. S. Studies of the Developmentof the Imaginal Cuticle of Calliphoraerythrocephala.

CARLISLE, D. B. On the Relationship be-tween Mammary, Sweat, and SebaceousGlands.

HORRIDGE, A. Observations on the NerveFibres of Aurellia aurita.

SHAFIQ, S. A. A study of the Embryonicdevelopment of the Gooseberry Sawfly,Pleronidea ribesii.

WIGGLESWORTH, V. B. Growth and Regenera-tion in the Tracheal System of an Insect,Rhodnius prolixus (Hemiptera).

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VOL. XXXIII, NO. 2 . JUNE I954 . 52J. NET

J. £. MORTON. The biology of Limacina retroversa.D. B. CARLISLE. Notes on the Didemnidae (Ascidiacea). III. A comparison of

Didemman maculoiuin, D. candidxrx, D. helgnlandicum, and Trididemnum alleni.D. B. CARLISLE. Notes on the Didemnidae (Ascidiacea). IV. The increase of

Trididemnum mveum (Giard) in the Plymouth area, and the structure of its larva.D. B. CARLISLE. Styela mammiculata n.sp., a new species of ascidian from the

Plymouth area.N. INGRAM HENDEY. Note on the Plymouth 'NitzsMa' culture.G. R. FORSTER. Preliminary note on a survey of Stoke Point rocks with self-contained

diving apparatus.J. H. F-RASER. Warm-water species in the plankton off the English Channel entrance.DOUGLAS P. WILSON and F. A. J. ARMSTRONG. Biological differences between sea

waters: experiments in 1953.DOUGLAS P. WILSON. The attractive factor in the settlement of Ophelia bicorms

Savigny.F. A. J. ARMSTRONG. Phosphorus and silicon in sea water off Plymouth during the

years 1950 to 1953.S. M. MARSHALL and A. P. ORR. Hatching in Calami finmarcUcus and some other

copepods.R. H. MILLAR. The development of the ascidian Pyura mcrocosmus (Savigny).A. C. HARDY and R. BAINBRTDGS. Experimental observations on the vertical migra-

tions of plankton animals.R. A. ROBINSON. The vapour pressure and osmotic equivalence of sea water.J. A. ALLEN. A comparative study of the British species of Nucula and Nuculana.D. J. CRISP. The breeding of Balanus porcatus (da Costa) in the Irish Sea.W. R. G. ATKINS, PAMELA G. JENKINS and F. J. WARREN. The suspended matter in

sea water and its seasonal changes as affecting the visual range of the Secchi discM. R. DROOP. A note on the isolation of small marine algae and flagellates for pure

cultures.W. J. REES and J. R. LUMBY. The abundance of Octopus in the English Channel.N. INGSAM HENDBY. A preliminary check-list of British marine diatoms.ABSTRACTS OF MEMOIRS. Recording work done at the Plymouth Laboratory.

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