mantle layer differentiation (supplemented by thymidine autora- 

 diography); extensive discussion; numerous excellent micro- 

 graphs, drawings, diagrams and reconstructions. 



89. 



C.G.van OOSTROM. 1972. DE INITIELE REGIONALE ECTODERM-ONTWIKKE- 

 LING IN HET KOPGEBIED BIJ DE MUIS (The initial regional develop- 

 ment of the cephalic ectoderm in the mouse) 



M.D. thesis, Univ. of Amsterdam. 98 pp., 4l figs., English summary 

 (2 pp.) 



Eleven embryos of 7-10 days (0-21 somites); mapping of local 

 differences in thickness and mitotic activity of cephalic ecto- 

 derm; relation with formation of cephalic placodes; comparison 

 with man and lower vertebrates; numerous good reconstructions. 



90. 



S.C.J. van der PUTTE. 1971. DE ONTWIKKELING VAN HET LYMPHVAAT- 

 STELSEL BIJ DE MENS (The development of the lymphatic system in 

 man) 



M.D. thesis, Univ. of Amsterdam. 124 pp., 45 figs., English sum- 

 mary (3 pp. ) 



Study based on serial sections of 40 human embryos ranging in 

 length from 8 mm (total) to 33 mm (CR); photomicrographs, sche- 

 matic drawings, and 11 very clear graphical reconstructions, 

 from inception till complete establishment of main lymphatic 

 trunks . 



91. 



V.B.VEENHOF. 1969. THE DEVELOPMENT OF STATOCONIA IN MICE 

 M.D. thesis, Univ. of Amsterdam. North-Holland, Amsterdam, etc. 

 49 pp. , 6 figs. , 18 pis. 



Study based on 12-20-day mouse embryos, juvenile and adult 

 mice; histology, histochemistry, electron microscopy, micro- 

 incineration, Ca-autoradiography , X-ray microradiography, X-ray 

 diffraction. 



Symposium reports 



92. 



B.Q. BANKER, R. J . PRZYBYLSKI , J . P . van der MEULEN, and M.VICTOR, 

 eds. 1972. RESEARCH IN MUSCLE DEVELOPMENT AND THE MUSCLE SPINDLE 

 Excerpta Medica, Amsterdam, etc. International Congress Series 

 no. 240. X,474 pp., 280 figs., 44 tabs., subject index, index to 

 contributors. D.fl.105.00, £ 14.65 



Contributors to part I: Carlson, Cosmos, Fischman, Hauschka, 

 Herrmann, Holtzer, Kelly, Love, Marchok, Meyer, Przybylski, 

 Shafiq, Simpson, Yaffe, Zak 



The Symposium of which this book is the report was held in Oc- 

 tober, 1970 in Cleveland, Ohio. It had 40 invited participants, 

 most of them from North America, while 200 others attended and 

 took part in the discussions. We will only review part I, which 

 deals with the development of muscle; part II (14 papers) is en- 

 titled "The muscle spindle and the Golgi tendon organ". 



The 15 papers in part I are all reports of recent results, 

 partly unpublished in 1970. Most of them have an average length 

 of 15 pages, and several were amplified prior to printing. They 

 deal with structural, biochemical, and molecular-biological as- 

 pects of muscle development in vivo and in vitro, involving nor- 



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