are given for the photographs, often ages are not stated, the electron micrographs are 

 entirely devoid of labels, no details of staining or micrography are supplied, and termi- 

 nology is inconsistent. 



The 1st and 2nd editions are practically identical. The production is luxurious and the 

 price high; the English is often awkward and should have been corrected. 



Dissertations 



25. 



M.VIANEY-LIAUD. 1972. GAMETOGENESES ET VOIES GENITALES CHEZ LE 



PLANORBE AUSTRALORBIS GLABRATUS SAY (MOLLUSQUE GASTEROPODE 



PULMONE); description et etude experimentale de leur controle 



Ph.D. thesis, Univ. de Paris VI, 57 pp., 15 pis., mimeographed 



Description of ovotestis development; differentiation of germ cells in organ culture 

 with or without CNS; castration of juveniles or adults: effect on genital tract and 

 spawning, germinal regeneration; numerous good photo-micrographs. 



Symposium reports 



26. 



C.THIBAULT and P.MAULEON, organizers. 1973. COLLOQUE SUR L'OVOGENESE 



ET LA FOLLICULOGENESE 



Inst. Natl, de la Rech. Agronomique, Versailles. Ann. de Biol. Anim. Biochim. Biophys. 

 13. 258 pp., 156 figs., 44 tabs. Fr. 160.50 (paper) 



This special issue contains the papers read at an international symposium held in 

 Nouzilly, France in December, 1972. Of the 43 contributors 16 came from outside 

 France; seven of these were British. Most papers are research reports; some are reviews of 

 recent work. 



Work on various mammals is most extensively covered. Of the 24 papers only the first 

 four deal with various invertebrates. Two of these are reviews of oogenesis in inverte- 

 brates and of the endocrine control of oogenesis in insects, respectively. One paper deals 

 with the in vitro maturation of fish oocytes. The remaining papers on mammals are 

 extremely varied and contain much valuable new information, morphological as well as 

 ultrastructural and endocrinological. 



The book is profusely illustrated; the numerous photomicrographs are very well 

 reproduced. The price, however, is excessive for a journal supplement. 



IMPLANTATION, PLACENTA, FETAL MEMBRANES 



Monographs 



27. 



D.V.I. FAIRWEATHER and T.K.A.B.ESKES, eds. 1973. AMNIOTIC FLUID, Research 



and clinical application 



Excerpta Medica, Amsterdam. X,344 pp., 108 figs., 65 tabs., subject index, index to 



contributors. D.fl.91.00, ca. $ 28.50 



The interest in human amniotic fluid has greatly increased during the last decade, 

 particularly as a result of new clinical applications. This research monograph was written 

 by an international team of 25 specialists; most of them are clinicians, and the majority 

 work in the United Kingdom, the U.S.A., and the Netherlands. The book is intended as a 

 comprehensive "state of the art" of the subject. 



179 



