.17 1 SMITH \ITIK\TIO\ (H THK THKORY OJ 



16. Sar/i.* Kin Beitrag zur Kenntniss der Ernahrangs- 



thatigkeil der Blatter. Arb. d. Hot. Inst, in Wiirzburg. vol. 3, 

 Part 1. 1884, p. 1. 



IT. 8chdU nberger, II . ('. Beit rage zur Kenntniss von Ban 

 and Funktion der SpaltofTnungen. Bot . Zeitung, vol. I.. 

 1896 p. 169. 



IS. Schimper Plant Geography, Eng. Transl.. Pt. 1.. 

 Chap. IV.. Seel. 3. p. 74. 



lit. 8chimper Planl Geography, Eng. Transl.. Pi 111 

 Si t. [., (hap. 11.. p. 246. 



20 s/iihuia. K. — Beitrage /.in Wat hsthumgesehichte der 

 Bambusgewaohse. Journ. Coll. Sci., Tokyo, Vol. Mil Pt. 

 Ill . 1900. 



21. Siahl . E. — Ueber den Prlanzenschlaf and verwandte 

 Ersoheinungen. Bot, Zeitung, 1897. Pts. 5 and (i. p. 71. 



22. Wiemer, •/. Photometrische Untersnchungen auf 

 Pflanzen-physiologischem Gebiete. I. Abh. Orientirende 



suche iiber den Einfluss der sogenannten chemisohen 

 Lichtdntensital auf denGestaltungsprocessder Pflan/.euorgane. 

 8. Ak. WienCII, I. L893. Of. Bot. Centralblatl r^. L893, pp. 

 Is l-.t 



EXPLANATION OF PLATES. 



I'luh 22 Growth in millimetres per two hours of Agave 

 Morrissij at Bakgala from March 9th at 6a.m. to March loth 

 it <i p.m. 



owtfa in mm. per 2 hours of Furoreea gigantea at (Candy 

 from June II at 8 a.m. to June L2th at 6 p.m. 



DWth in nun per - hoUTfl of \l'.i\'' americana at llakgala 



1 1 >>tn .lu ne I -i at B a.m. to June 2nd al ♦>.:{<» p.m. 

 r< in | ji r 1 1 no i iii i ee t"i eaoh in V . 



Plato L'.'i (below) Growth in nun. per 2 hours of Dendro- 

 i imis gigantetu al Kakgala from March .'list at 7 a.m. to 



April 2nd 6 a.m. with curves foi Eumidit) and Temporal ore in 



