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SUMLOCK COMPUCORP CALCULATORSm m

NAME

COMPANY

«OD(IESS

SUMLOCK COMPTOMETER LTD.,Head Office: ANITA HOUSEROCKINGHAM ROAD, UXBRIDGE. MIDDLESEXTEL: UXBR1DGE 51522

TELEPHONE N 0 . _

Jnl. Exp. Biol. 56,1

OLYMPUS- MICROSCOPES^

A comprehensive range of high performance microscopes.

• Research, Stereoscopic and Inverted types with accessoriesfor photomicrography and photomacrography, phase con-trast, fluorescence etc.

• High grade optics: Achromats.planachromats, fluorite.apoch-romats and both wide field and super-wide field systems.

• Widely used in research establishments. Universities, Collegesetc., throughout the United Kingdom.

Research microscope outfits from £266 complete.

Stereoscopic zoom £159.50

Please ask for details, stating type of instrument in whichyou are interested.

Cjallenhaml)A.GALLENKAMPCrCO.LTD.

LONDON: WIONES:P.O.Box 290 Technico House. P.O. Box 19,Christopher Street. Victoria House.London. EC2P 2ER. Widnos. Lanes.

STOCKTON-ON-TEES:Portrack Lane,Stockton-on-Tees,TMssido TS18 2PT.

Tel: 01 -247 3211 .Telox 886041 Tet: 051 -424 2040. Tel: 0642 63441.

Full details of journals being published

during 1972 are available in the New

Cambridge Journals Catalogue, available

from the journal Sales Promotion

departments of

Cambridge University Press

at either

200 EUSTON ROADLONDON NW1 2DB

or 32 EAST 57th STREETNEW YORK, N.Y.10022

(•i)

All communications should be addressed to the Editors,

The Journal of Experimental Biology, Zoological Laboratory,Downing Street, Cambridge CB2 3EJ, England

M A N U S C R I P T S

Authors are requested to present their work in as concise a form as possible. MSS. should be type-written (double spacing) on one side only of the paper, and the pages numbered. Tables and Legendsshould be on separate sheets from the rest of the MS. and should be numbered. The place where theyare to be inserted in the text should be indicated in the margin of the MS. Bibliography should be givenunder the heading of' References' and in the following form: Surname of authors (in alphabetical order),initials, date of publication, title of paper, title of journal (abbreviated according to the World List ofScientific Periodicals), volume and pages of references (first and last). In the text a reference should bequoted by the author's name and date (in brackets), and not by the numerical order of the paper in thelist of references. Every paper must contain a summary of the chief results of the enquiry.

I L L U S T R A T I O N S

(i) Line blocks. These should be used whenever possible. Illustrations should be pen drawings inIndian ink (Jet black and waterproof) on smooth white Bristol board, heavy drawing paper or good qualitytracing paper. Drawings must not be folded or creased in any way. Where a drawing is labelled, thelabel lines should be drawn in black but the lettering should be put in lightly in soft pencil. Where considerablereduction is required it is essential that the drawings be of such a character as to bear such reduction.All brush work, tinting or pencil shading is to be avoided. Mechanical stipple, if too fine, may not standreduction in size when the block is made.

Charts and curves can often be drawn to best advantage on graph paper ruled in pale blue. The bluelines, while ensuring accuracy, are easily eliminated by the printer, only the blackened lines that aredesired remaining.

(ii) Text half-tone blocks. These are suitable for illustratings involving brushwork, or in which thedepth of shading is an essential feature. They can be used for such things as oscillograph records andsome photographs can be produced in this way, a good glossy bromide print being required. Illustra-tions should be gummed on white card, grouped and numbered as they are to appear in print. Alllettering should be drawn in position on a covering sheet of transparent paper.

(iii) Plates. Plates should be used only for illustrations, such as photomicrographs, in which themost accurate reproduction of fine detail is called for. Plates are expensive and the Editors may requirean author to defray the cost of plates which in their opinion are not essential. The photographs makingup the plate should be gummed on white card, grouped and numbered, as they are to appear in print.Exclusive of margin, the plate figures should not cover, when reduced an area greater than 7J in. inlength x 5 in. in width when ready for reproduction as a single plate, or 7I in. x 11J in, in the case ofdouble plates. All lettering should be shown in position on a covering sheet of transparent paper.Authors are asked not to submit sheets of illustrations which are more than foolscap size; or, if thiscannot be avoided, to include photographic reductions for the convenience of referees.

A B S T R A C T S

Authors should submit with their MSS. five copies (typewritten, double spacing) of a abstractsuitable for biological abstracting journals. The abstract will not appear in The Journal of ExperimentalBiology but will be scrutinised by the Editors before being passed for publication. The text of thesummary may serve as an abstract provided that it conforms to the following requirements. The abstractshould outline as briefly as possible the results and the definitive conclusions of the work. Details ofmethods are generally not required. A paper of average length should be abstracted in about 100 wordsand the abstract should never exceed 3% of the original. Each copy of the abstract should bear the titleof the paper, the name(s) of the authors) and an address to which applications for offprints may be sent.

P R O O F S H K E T S A N D O F F P R I N T S

Authors will receive one set of slip proofs for correction and return to the Editors. A page proof willalso be sent if the slip proof is marked by the author ' Revise'. An allowance of ten shillings per sheetof sixteen pages will be made for alteration apart from printer's errors. Authors may be charged forany excess over this average. Authors will receive 50 copies of their papers free; additional copies maybe purchased and should be ordered when the proofs are returned to the Editors.

Enquiries about the reproduction of material homTheJournal of Experimental Biology should be sent to:D R D. W. T. CROMPTON,

Secretary, Company of Biologists Limited, The Molteno Institute,Downing Street, Cambridge CBa 3EE, U.K.

© Company of Biologists Ltd, 1972

THE SOCIETY FOR EXPERIMENTAL BIOLOGYThe Society holds Conferences four times a year at which the results of experimentalinvestigations are presented and discussed. Enquiries about membership of the Societyshould be addressed to one of the Secretaries:

Zoological Secretary Botanical SecretaryDr A. P. M. LOCKWOOD, Dr N. SUNDERLAND,Department of Oceanography, John Innes Institute,The University, Colney Lane,Southampton, SO9 5NH Norwich, NOR 70F

PRINTED IN GREAT BRITAIN AT THE UNIVERSITY PRINTING HOUSE, CAMBRIDGE