724 On the Natural Succession of the Dicotyledons. [ November, 
S ie ar ov ess ce hued cel eV ens Coe e a a cal 100 cc. 
Saturated aqueous solution of magenta or aniline red..... eseas.. 25 CC. 
Pee a ooo Vb Col boc ee ks cos SUa VEGI ke Paes Cibo pe FROM 
4. Plaster... o 0.63 100 cc 
eae blue in powder eVawe NU PEN 2 grams, 
r a soe 70g oh Os coe RS bs See ee See ES 100 cc. 
By POI, EN ude bovecawes spade t ore aT 100 cc 
Saturated aqueous solution of aniline blue.............cceee ee 10.cc 
BPA OI oslo s isle Saab VERGO Ee «CWE oC thes go cc. 
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a 
= 
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:0; 
ON THE NATURAL SUCCESSION OF THE DICOTY- 
LE ; 
BY LESTER F. WARD, A.M. 
HE system of classification for dicotyledonous plants now in 
use in most text books of botany is substantially that of 
Antoine Laurent de Jussieu, as published in his Genera Plantarum 
in 1789. Although many minor modifications have been made 
_and are still being made by different authors, the fundamental 
arrangement into three “ Divisions,” depending on the nature of 
_ the corolla, has been maintained in its integrity to the mite 
; AA sequel to the article on the Genealogy of Plants in the June number. 
substance of the two articles was embodied in a paper read before the Psp 
ety of Taos Pinag, 16, 1878. 
