160 MORPHOLOGY, ETC., OF VASC. PLANTS [Bot. Absts. 



aquatic life author would substitute idea that such a difference between juvenile and mature 

 leaves as would render former suitable to aquatic life was prerequisite to migration to water. — 

 J. P. Kelly. 



1101. Arber, the late E. A. Newell. Some remarks on the organization of the cones of 

 Williamsonia gigas (L. and H.). Ann. Bot. 33: 173-179. Fig. 1-5. 1919.— See Bot. Absts. 3, 

 Entry 1143. 



1102. Blake, S. F. Revision of Ichthyomethia, a genus of plants used for poisoning fish. 

 Jour. Washington [D. C] Acad. Sci. 9: 241-252. 1919.— See Bot. Absts. 3, Entry 1823. 



1103. Blakeslee, A. F. A unifoliate mutation in the Adzuki bean. Jour. Heredity 10: 

 153-155. Fig. 2. 1919.— See Bot. Absts. 3, Entry 979. 



1104. Coulter, J. M. Seedling of dicotyledons. [Rev. of: Sinnott, E. W. Conserva- 

 tism and variability in the seedling of dicotyledons. Amer. Jour. Bot. 5: 120-130. Fig. 4- 

 1918. (See Bot. Absts. 1, Entry 579.) Bot. Gaz. 67: 103. 1919. 



1105. Farwell, Oliver A. Cramp bark, highbush cranberry. Northwestern Druggist 

 27: 245-246. 1919.— See Bot. Absts. 3, Entry 1709. 



1106. Flurt, Philipp. Ueber Wurzelverwachsungen. [Root grafting.] Schweiz. Zeit- 

 schr. Forstwesen 70: 37-41. 1919.— See Bot. Absts. 3, Entry 535. 



1107. Gertz, Otto. Kallushypertrofier och nagra i samband dermed staende anatomiskt- 

 fysiologiska fSrhallanden hos minerade blad. [Callus hypertrophies and some connected 

 anatomico-physiological conditions in mined leaves.] Bot. Notiser 1918: 121-139. 1918. — 

 See Bot. Absts. 3, Entry 1243. 



1108. Hitchcock, A. S. A peculiar species of Lasiacis. Jour. Washington [D. C.] Acad. 

 Sci. 9:35-38. 1919. 



1109. Holmes, M. G. Observations on the anatomy of ash-wood with reference to water- 

 conductivity. Ann. Bot. 33:255-264. Fig. 1-7. 1919.— Counts and measurements of ves- 

 sels in the first annual ring were made throughout several shoots of ash which differed in 

 size and vigor. Calculations were made and curves plotted which made possible a com- 

 parison, in regard to the proportion of water conducting elements, between different parts 

 of the same shoot as well as between shoots of different kinds. The chief results are as fol- 

 lows: The total area of the wood and the total number of vessels both decrease from base to 

 apex, the decrease in the former being most rapid at the base. The average diameter of the 

 vessel cavities usually rises slightly and then falls towards the apex; in small weak shoots 

 only the fall is seen. The number of vessels per square millimeter rises and the curve is 

 especially steep at the apex; the figures are very high for weak shoots. The total area of 

 vessel cavities — absolute conductivity — of course falls in all cases; it is highest in the most 

 vigorous shoots and in cases where the apical bud is strongest. The percentage of the area 

 of the wood occupied by vessels — specific conductivity — generally rises and then falls, the 

 maximum occurring nearer the apex of the shoot than the base; the figures are lowest for weak 

 shoots. A comparison is made between the results for the ash and those for the hazel pre- 

 viously studied; the curves are similar but the specific conductivity of ash is much lower than 

 that of hazel. — W. P. Thompson. 



1110. Lundegardh, Hexrik. Ekologiska och fysiologiska studier pa Hallands Vadero. 

 II. Till kannedom om strandvaxternas fysiologi och anatomi. [On the physiology and anatomy 

 of shore-plants.] [Swedish, with English summary.] Bot. Notiser 1919: 1-39. 1919. 



