LE av Resaarech Ldees- 1. Implant en egge or emryos of frog in sbdomen or onto omentum. Determine influence of 'o0lda' environcent on growth of embryonic material, and vice verse. 1. look for rates of development of the embryos, and possitle development of teratomata. 2. Tissue culture of egf cell: in Arbacie, using Ca free seawater if necessary to induce separation of blastomeres, attempt to induce indefinite proliferation of the egg eell by using varioue medie. This should be wothout differecntédtion or orgenizetion. 3. Cukture of grasshopper testes--- whatvinduces the sperme togoniun to stert its cycle of spermetocyte end differéntie tion into spermetid Can sperm-formaéion be induced in vitra? Egg?? Serious prectical and pio-philosophicel consquences:: the perpetuetion of the germ without the OR « The influnece of respiretory inhibétors on the mitotic figurel Look for a meterial in which the mitotic funetion is pronounced, end which is amenable to reppiretory and chemical enelysis. Even the old one of cyanide on onion root tip would be intersting. W’rk out a cese here even now???Why bother to introduce the compliece tion of colchicine. Repeat the electridynamic mpperiments of MeSlendon ete, and determine whether the root 8 really remain elive. One pesumptive test might be the assumption of the c-figure on subsequent treatment with eolchi- eines Reversibility is the impirtant factor. If there is » fairly simple electrical polarization in the root tip it should te demonstrak as follows | 7 > p+ | | : | t ~ | ¢ ~ l 7 —- “uaa facts 2 0 “f Seanecsurte 1 charge» helouce, wt ne mene Fee brace wh tee The Mclearos sim of | at pa ey Fadia ton “ 7 OE EE ILA DE few audlOS tatluedle , ), Awe. Hrsg rvs (tts) |. Tlecacce (Sap). 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