278 



2. The methods of measuring transpiration, evaporating power of the air, 

 relative humidity, and Hght intensity are described. 



3. The anatomy of the shoots is discussed from a physiological standpoint. 

 A water-storage tissue in the Casuarineae and a type of hair in the Chenopodiaceae 

 hitherto undescribed are recorded. 



4. An attempt is made to correlate the transpiration rates with the anatomical 

 modifications of the leaves. 



Bibliography. 

 Brown and Escombe. 



1900 — "Static Diffusion of Gases and of Liquids in relation to Carbon 

 assimilation in Plants," Phil. Trans. Roy. Soc. Lond., Bull. 193. 

 Cannon, W. A. 



1921— "Plant Habit and Habitat in the Arid Portions of South Australia," 

 Carn. Inst. Publications, No. 308. 

 Ewart, A. J. 



1910 — "On Transpiration and the Ascent of the Sap under Australian con- 

 ditions," Ann. Bot., xxiv., p. 85. 

 Haberlandt, G. 



1914 — "Physiological Plant Anatomy." 



Livingston, B. E. 



1906 — "The relation of Desert Plants to Soil Moisture and to Evaporation," 



Carn. Inst. Publications, No. 50. 

 Lloyd, F. E. 



1908 — "Physiology of Stomata," Carn. Inst. Publications, No. 82. 



1922 (a) — "The Occurrence and Function of Tannin in the Living Cell," 



Trans. Roy. Soc. Canada, xvi., Sect. 5. 

 1922 (b)— "The Mode of Occurrence of Tannin in the Living Cell," J. Am. 



Leather Chem. Assoc, 1922. 

 Monteil, F. 



1906 — "Anatomic comparee de la Feuille des Chenopodiacees," Paris, 1906. 



Morini, F. 



1894 — "Anatomia del Caule e della Foglia delle Casuarinee," Bologna, 1894. 



Volkens, G. 



1887— "Die Flora der Aegytisch-Arabischen Wiiste," Berlin, 1887. 



DESCRIPTION OF PLATE XXI. 



Fig. 1. Battery of potometers on stand. The plants from left to right are Atriplex 

 vesicarium, Geijera parviflora, Casuarina lepidophloia, Pholidia scoparia, Kochia sedifolia, 

 Rhagodia Gandichaiidiana. The atmometer is shown on the extreme right of the stand and the 

 thermometer on the left. 



Fig. 2. Shows the situation in which the work was carried out. The shrubs are chiefly 

 Kochia sedifolia, and Acacia spp., with a little Atriplex vesicarium. The trees are Myoporum 

 platycarpum and Casuarina lepidophloia. Malice scrub can be seen in the distance. 



Department of Botany, 



University of Adelaide. 



