Developmentof theChick HeartVictoria Maria de la Cruz,Simon Muhoz-Armas, andLuiz Munoz Castellanos

An original and well-illustrated de-scription of the chronological develop-ment of the chick heart, this book willprove useful to embryologists andstudents of human and animal cardio-logy alike. It is presented in atlas form,and the text is accompanied by 81photographs showing details of thedeveloping chick heart from earlyformation to the time of hatching.

$10.00

METHODS INEXPERIMENTALEMBRYOLOGY OF THEMOUSEKeen A. Rafferty, Jr.

' . . .well illustrated and plainly writ-ten . . . I recommend it for inclusion inthe libraries of developmental bio-logists as well as of teachers of biologywho wish to demonstrate early mam-malian development.'—AmericanBiology Teacher $8.50

DEVELOPMENT OFTHE GENITAL SYSTEMAND MALEPSEUDO-HERMAPHRODITISM

Jan E. JirasekEdited by M. Michael Cohen, Jr.

After a detailed analysis of normalgenital system development, Dr Jirasekdelineates and classifies the varioussyndromes of male pseudoherma-phroditism. Androgen-sensitive andandrogen-insensitive forms are distin-guished, and clinical aspects of thesyndrome and histological findings areillustrated with photographs. $12.00

JEEM 27, I

THE JOHNS HOPKINSUNIVERSITY PRESSBaltimore, Maryland 21218

(i)

INSTRUCTIONS FOR CONTRIBUTORS

Contributions and correspondence about them should be sent to Editorial Office, J. Embryol. exp.Morph., Dept. of Zoology, Downing St, Cambridge CB2 3EJ, U.K.

Contributions should be as concise as possible. They should be typewritten, double-spaced, on one sideof the paper, and the pages numbered. They should be fully ready for press, since revision in proof willnot be possible. Footnotes should be avoided. The author is requested to provide, in addition, a copy ofthe typescript and figures, and is also advised to keep a copy.

TABLES should be in typescript on separate sheets, and numbered. Authors should indicate the placesfor their insertion in the margin of the typescript. Authors are asked not to submit tables in the form ofphotographic prints. No tables should be submitted that are too large to be printed on one page.

A SUMMARY in English must be provided at the beginning of the text. It should not exceed 500 words.The author may provide a translation of the summary into a second language. The author should alsosend two copies of an abstract which must not be more than 100 words long and should be headedby the author's name and address and the title of the paper; these are sent to two different abstractingservices.

ACKNOWLEDGEMENTS should be placed immediately before the list of references.

REFERENCES should be listed alphabetically. In the text they should be referred to by the author's nameand the year of publication. If more than one reference to the same author and year is quoted, use suffixesa, b, etc. (e.g. 1951 a) in text and reference list. Papers and books should be listed as shown in the examplesgiven below. Journal names should be given the World List of Scientific Periodicals abbreviation.

Deuchar, E. M. (1971). The mechanism of axial rotation in the rat embryo: an experimental studyin vitro, J. Embryol. exp. Morph. 25, 189-201.

Dalcq, A. (1941). L'CEuf et son Dynamisme Organisateur. Paris: Albin Michel.

ILLUSTRATIONS

(i) Line drawings should be used wherever possible, in preference to illustrations requiring half-tonereproduction. If possible the size of all illustrations submitted should be such that they are reduced forpublication to approximately two-thirds linearly. If very large figures are submitted small photographicprints of them should also be included for use by referees. When reduced, no illustration or page of illus-trations together with its lettering can exceed five inches in width, and seven and a half inches in length.Name of author and figure number should be written on the back, together with the proposed reductionin size. Magnification should be indicated by a scale-line drawn in Indian ink on or beside illustrations.

(ii) Black and white line, or line and dot, drawings should have all lettering or numerals put in lightlyin block capitals with a soft pencil. Charts and graphs may be drawn in Indian ink on graph paper ruledin pale blue. Where several drawings are grouped as one figure, they should be distinguished by capitalletters (in pencil). Legends for all figures should be typed together on a separate sheet. The places forinsertion in the text should be indicated in the margin of the typescript. The drawings should be referredto in the text as ' Fig. 1', etc.

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