METHODS OF ARTIFICIAL PARTHENOGENESIS. 



E. NEWTON HARVEY. 



Papers on the subject of artificial parthenogenesis have been 

 fairly abundant during the past ten years, yet somewhat scat- 

 tered, appearing in zoological, physiological and chemical jour- 

 nals. It therefore seemed desirable to list the important con- 

 tributions, giving briefly, but in detail, the various methods of 

 exciting eggs to develop, together with results and references, in 

 the hope that it might prove of value to future workers. 



Such a list follows. Only annelids, echinoderms, molluscs and 

 vertebrates have been included. Under each class the observers 

 are arranged in alphabetical order; their researches in chrono- 

 logical order. 



As the most important general and theoretical work on arti- 

 ficial parthenogenesis may be mentioned the recent book of 

 Loeb, "Die Chemische Entwicklungserregung des tierischen 

 Eies," Berlin, 1909, in which the various phases of. this most in- 

 teresting subject are discussed in considerable detail. 



The following abbreviations have been used : — 



5. w. sea water. 



m. molecular solution. 

 n. normal solution. 

 min. minute. 



hr. hour. 



disl. w. distilled water. 

 P. B. polar bodies. 



esp. especially. 

 P. D. potential difference. 



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