102 LECTURE VI. 



In this and in previous lectures allusion has been frequently 

 made to transpiration, a term which, as we have learned, is 

 applied to the exhalation of watery vapour by plants. In the 

 next lecture we will study this process in detail. 



BIBLIOGRAPHY. 



Ray; Historia plantarum, I, 1686. 



Hales ; Statical Essays, I, 1769 (4th edition). 



Dutrochet ; Mdmoires, I, 1837. 



Hofmeister; Flora, 1858, and 1862. 



Schroder ; Der Friihjahrsaft der Birke, Dorpat, 1865. 



Gardiner; Quart. Journ. Micr. Sci., 1881. 



Moll ; Tropfenausscheidung, Med. d. k. Akad., Amsterdam, 1880 ; 



Nature, xxn, 1880. 



Williamson ; Ann. and Mag. of Nat. History, 1848. 

 Duchartre ; Ann. d. sci. nat., s6r. 4, t. xu, 1859. 

 Baranetzky ; Die Periodicitat des Blutens, Halle, 1873. 

 Detmer; Theorie des Wurzeldrucks, Jena, 1877. 

 Knight ; Collected Papers, 1841 : (Roy. Soc., 1801). 

 Sachs; Vorlesungen ueb. Pflanzen-physiologie, 1882. 

 Bohm; Warum steigt der Saft in den Baumen, Wien, 1878: also 



Ann. d. sci. nat., sr. 6, t. vi, 1878: Nature, xvm, 1878. 

 Elfving; Bot. Zeitg., 1882. 



Hartig; Unters. aus dem forstbotanischen Institut, Miinchen, 1882. 

 Sachs ; Porositat des Holzes, Arb. d. bot. Inst. in Wiirzburg, n, 1879. 



(The lithium-method is due to Church, and was first used by 



Mac Nab, Bot. Soc. Edin., xi, 1870.) 

 von Hohnel ; Bot. Zeitg., 1879. 

 Sachs ; Arb. d. bot. Inst. in Wiirzburg, II, 1878. 

 Sachs ; Lehrbuch, 4th edition, 1874, -p. 660 (2nd English ed., p. 688). 

 Pitra; Jahrb. f. wiss. Bot., XI, 1878. 



