No. 3, April, 1921] PHYSIOLOGY 315 



2161. Schouteden-Wert, J. Quelques experiences de regeneration de bourgeons chez 

 les racines de chicorees. [Regeneration of buds on the roots of chickory.] Acad. Roy. Belgi- 

 que, Bull. CI. Sci. 1920: 152-166. 13 fig. 1920. — These experiments were made with the roots 

 of the vegetable known as Brussels chickory, and they have demonstrated a material of the 

 highest order for the investigation of polarity. — The nature of the work is revealed by the fol- 

 lowing conclusions : (1) Roots of the chickory manifest a bud polarity which is strongly marked ; 

 in any position the proximal region produces the buds. (2) This bud polarity may not 

 sufifer inversion but nevertheless is affected by the external factors gravity and light which 

 interv3ne in the production of buds at the opposite pole. These external factors supple- 

 ment the internal factors and produce the same effects. — Henri Micheels. 



2162. Waller, A. D. On the so-called growth of amputated parts of plants. Jour. 

 Physiol. [London] 54i'2: xix-xx. 1920. — An adverse criticism of demonstrations made by 

 Sir J. C. BosE of his "crescograph" by which growth of amputated tips of hyacinth leaves 

 was claimed. The author regards these crescograph records as inconclusive, both because of 

 possible instrumental and physical errors and because of mere turgor changes. "Growth is 

 an irreversible change and is attended by continuous gain of length," while "turgor is a 

 reversible change; gain or loss of water causes gain or loss of length." — Ernest Shaw Reynolds. 



MOVEMENTS OF GROWTH AND TURGOR CHANGES 



2163. B., V. H. Movements of plants. [Rev. of: Bose, J. C. Life movements in plants. 

 Trans. Bose Res. Inst. Calcutta 2 : 253-597 + i-xv. 1919.] Nature 105:416-417. 1920.— 

 Reviewer finds the work not well related to that of previous investigators. — 0. A. Stevens. 



2164. Bose, J. C. Life movements in plants. Trans. Bose Res. Inst. Calcutta 1 : 1-252 + 

 i-xxiv. Fig. 1-92. 1918; 2: 253-597 + i-xv. Fig. 93-220. 1919.— The 2 volumes (continu- 

 ously paged) constituting the Transactions of the Institute for 1918 and 1919 present the 

 results of experimental work on the "life movements in plants" under the following major 

 subdivisions: (1) response of plant organs, (2) growth and its responsive variations, (3) 

 tropisms, and (4) night and day movements. The special topics investigated and the names 

 of those assisting, where such assistance was rendered, are given below: i. — The problem of 

 movements in plants, ii. — The "praying" palm tree (assisted by N. N. Neogi). iii. — Action 

 of stimulus on vegetable tissues (assisted by N. N. S. Gupta), iv. — The diurnal variation of 

 moto-excitability in Mimosa, v. — Response of petiole-pulvinus preparation of Mimosa 

 pudica (assisted by S. C. Das), vi. — On conduction of excitation in plants, vii. — On elec- 

 tric control of excitatory impulse, viii. — Effect of indirect stimulus on pulvinated organs 

 (assisted by G. Das), ix. — Modifying influence of tonic condition on response (assisted by 

 G. Das), x. — The high magnification crescograph for researches on growth (assisted by G. 

 Das), xi. — Effect of temperature on growth (assisted by S. C. Dass). xii. — The effect of 

 chemical agents on growth (assisted by G. Das), xiii. — Effect of variation of turgor and of 

 tension on growth, xiv. — Effect of electric stimulus on growth (assisted by G. Das), xv. — 

 Effect of mechanical stimulus on growth, xvi. — ^Action of light on growth (assisted by G. 

 Das), xvii. — Effect of indirect stimulus on growth (assisted by G. Das), xviii. — Response 

 of growing organs in state of sub-tonicity. xix. — Resumption of autonomous pulsation and 

 of growth under stimulus, xx. Action of light and warmth on autonomous activity, xxi. — • 

 A comparison of responses in growing and non-growing organs (assisted by G. Das), xxii. — • 

 The balanced crescograph. xxiii. — On tropic movements, xxiv. — Tropic curvature with 

 longitudinal transmission of effect of stimulus (assisted by G. Das), xxv. — Tropic curvature 

 with transverse transmission of effect of stimulus (assisted by G. Das), xxv . — Mechano- 

 tropism: twining of tendrils (assisted by G. Das), xxvii. — On galvanotropism (assisted by 

 G. Das), xxviii. — On thermonastic phenomena (assisted by S. C. Das), xxix. — On photo- 

 tropism. xxx. — Dia-phototropism and negative phototropism (assisted by G. Das), xxxi. — 

 The relation between the quantity of light and the induced phototropic curvature (assisted 

 by S. C. Das), xxxii. — The phototropic curve and its characteristics, xxxiii. — The trans- 



