308 TAXONOMY, VASC. PLANTS [Box. Absts., Vol. X, 



1994. Gardner, Frank D. Liming as related to farm practice. Jour. Amer. Soc. Agron. 

 13: 210-220. 1921. — A practical discussion of liming is presented. — F. M. Schertz. 



1995. LiPMAN, Jacob G. The value of liming in crop rotation with and without legumes. 

 Jour. Amer. Soc. Agron. 13: 206-210. 1921. — In rotation of non-legumes, lime is not a vital 

 factor in increasing nitrogen yields except in the case of soils well supplied with organic matter 

 or so deficient in lime and other basic materials as to lead to textural deterioration or to the 

 formation of toxic compounds of aluminum or iron. It is difficult and uneconomical to main- 

 tain an adequate supply of nitrogen in the soil with rotations of non-legumes. The import- 

 ance of lime is shown, for the proper accumulation of nitrogen from the atmosphere, in the 

 case of crop rotation with legumes. — F. M. Schertz. 



1996. MacIktire, W. H. The nature of soil acidity with regard to its quantitative deter- 

 mination. Jour. Amer. Soc. Agron. 13: 137-102. 1921. — A review is presented of the present 

 day literature and a summary of the ideas regarding the acidity of rock-derived soil. — 

 F. M. Schertz. 



1997. Mooers, C. a., and W. H. MacIntire. The comparative effect of various forms of 

 lime on the nitrogen content of the soil. Jour. Amer. Soc. Agron. 13: 186-205. 1921. — In 

 4 series of experiments lime in the form of oxide, hydrate, precipitated carbonate, ground 

 limestone, ground dolomite, and precipitated magnesium carbonate were used. Plots of 

 J p ."^0 acre were treated at the rate of 2 and 8 tons per acre. Liming at the 2- ton rate resulted 

 with the same loss of soil nitrogen in all the series. Both the oxide and the hydrate when 

 applied at the rate of 8 tons per acre resulted in a waste of nitrogen. Precipitated MgCOa 

 induced losses comparable with those of precipitated CaCOs. The oxide and hydrate induced 

 the greater losses, while ground limestone and dolomite induced the least losses of soil nitro- 

 gen. Fine precipitated carbonate when applied at the rate of 2 tons induced nitrogen losses 

 almost indentical with those of the oxide and hydrate, but when applied with dolomite at the 

 8-ton rate ranked with dolomite and ground limestone. — F. M. Schertz. 



1998. Plummer, J. K. The effect of liming on the availability of soil potassium, phos- 

 phorus and sulfur. Jour. Amer. Soc. Agron. 13: 1G2-171. 1921. — The addition of calcium 

 and magnesium compounds does not increase to any practical extent the availability of the 

 soil's store of native potash. Additions of calcium or magnesium does not reduce the neces- 

 sity of applying phosphates to the soil. The solubility of native soil sulphates apparently is 

 increased by lime addition. — F. ii/. Schertz. 



TAXONOMY OF VASCULAR PLANTS 



J. M. Greenman, Editor 

 E. B. Payson, Assistant Editor 



(See also in this issue Entries 1477, 1511, 1559, 1650, 1720) 



GENERAL 



1999. Anonymous. [Rev. of: Britton, N. L., and C. F. Millspaugh. The Bahama 

 flora, viii+695 p. Ackerman: Bronx Park, New York City (see Bot. Absts. 7, Entry 1429).] 

 Jour. Botany 59: 112-114. 1921. [See also Bot. Absts. 8, Entry 2235; 10, Entry 322.] 



2000. Cheeseman, T. F. Contributions to a fuller knowledge of the flora of New Zealand : 

 No. 7. Trans, and Proc. New Zealand Inst. 52: 9-16. 1920.— There are listed 33 plants, 7 of 

 which are introductions, showing extensions of range or peculiarities of habitat. Pneumato- 

 phores are described on Eugenia jnaire A. Cunn. Solanum aviculare Forst. var. albiflora is a 

 new variety described here. — Wm. Randolph Taylor. 



2001. [Druce, G. Claridge.] New county and other records. Bot. Soc. and Exchange 

 Club British Isles Rept. 5: 93-137. 1917 [1918]; 365-412. 1918 [1919]; 635-694. 1919 [1920]. 



