49] Entwicklung. Regeneration und Polarität (einschl. Wundreiz) 515 



d. Wiss. LI, 1921, p. 861—881, 10 Fig.) — Ref. in Bot. Ctrbl., N. F. I, 1922, 

 p. 450. 



452. Haborlandt, G. Die E ntAvicklungserregung der partheno- 

 genetischen Eizellen von Marsilia Drummondü A.Br. Xach Präpa- 

 raten Eduard Strasburgers. ( Sitzungsber. Preuß. Akad. d. Wiss. LH, 

 1922, p. 4^16, 7 Fig.) — Ref. in Bot. Ctrbl., N. F. I, 1922, p. 450—451. 



453. Huber-Pestalozzi. G. Über Bruclidreif achbildung bei einem 

 einzelligen Organismus (Ceratium hirundinella 0. F. M.). (Arcb. f. Entw.- 

 Mech. 52, 1922, p. 276—280, 1 Fig.) — Ref. in Bot. Ctrbl., N. F. II, 1923, 

 p. 389. 



454. Janse, J. M. La polarite des cellules cambiennes. (Ann. 

 Jard. Bot. Buitenzorg 31, 1921, p. 167—181, 1 Plan.) — Ref. in Zeitschr. f. Bot. 

 14, 1922, p. 562. 



455. Loeb, J. Rules and niechanism of inhibition and corre- 

 lation in the regeneration of BryophylUim calycimim. (Bot. Gazette 

 LX, 1915, p. 249— 276, mit 41 Textfig.) — Summary : „Tlie phenomena of 

 Inhibition of regeneration liave been studied in BryophylUim calycimim and 

 it was found tliat they are governed by tlie following simj)le rule: If an organ 

 a inhibits tbe regeneration or growtb in an organ b, the organ b often accelerates 

 and favors the regeneration in a. This rule is best unterstood on the assumptiou 

 that the inhibiting organ receives something from the inhibited organ necessary 

 for regeneration. It is pointed out that this harmonizes with the older assump- 

 tion of botanists and of the writer that the flow of material and the block to 

 such a flow after mutilation is responsible for the phenomena of inhibition in 

 regeneration, as well as for the phenomena of correlation." 



Antwort und Kritik dazu: 



Loeb, J. Healthy and sick specimens of Bryophyllum calycinum. 

 (Bot. Gazette LXVI, 1918, p. 69.) 



Brown, E. L. Regeneration of Bryophyllum calycinum. (Bot. 

 Gazette LXV, 1918, p. 191—193, mit 2 Textfig.) 



456. Loeb, J. Quantitative laws in regeneration III. The 

 quantitative basis of polarity in regeneration. (Journ. Gen. Physiol. 

 4, 1922, p. 447—462.) 



457. Loeb, J. The quantitative Basis of the polar character 

 of Eegeneration in Bryophyllum. (Science LIV, 1921, i). 521 — 522.) — ■ 

 Ref. in Bot. Ctrbl., N. F. I, 1922, p. 451. 



458. 3Ialta, N. Versuche über die Widerstandsfähigkeit der 

 Moose gegen Austrocknung. (Acta Univ. Latviensis I, 1921, p. 125 — 129, 

 5 Textfig.) — Ref. in Bot. Ctrbl., N. F. I, 1922, p. 441. 



459. Neef, F. Über polares Wachstum von Pflanzenzellen. 

 (Jahrb. f. wiss. Bot. 61, 1922, p. 205—289, 82 Textfig.) — Ref. in Bot. Ctrbl., 

 N. F. II, 1923, p. 69—70; siehe auch Ref. in Zeitschr. f. Bot. 15, 3, 1923, p. 185 

 bis 186. 



460. Xiehols. Susan P. Methods of healing in some algal cells. 

 (Amer. Journ. of Bot. IX, 1922, p. 18—27.) — Ref. in Bot. Ctrbl., N. F. I, 

 1922, p. 385. 



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