W. C. Worsdell. 
74 
of “ fasciation ” : it is probably a pathological condition. In the 
majority of cases it is doubtless induced by superabundant nutri¬ 
tion which produces a subtle diseased condition, thus giving rise 
to a hypertrophied growth which destroys the balance of the 
organism. The crested form of Celosia argentea cannot, apparently, 
be maintained without abundantly manuring the potted plant. 
Yet who shall say that we can trace the real innate phy¬ 
siological agency concerned in the production of this “ mon¬ 
strosity ” ? It seems fairly clear' that the environmental factor 
is not the only one involved; for “ fasciated ” axes and leaves 
appear as isolated cases amongst others which are perfectly normal 
and where both are growing apparently under precisely similar 
conditions. It would appear, therefore, that the individual idiosyn¬ 
crasy of the organ or plant itself is another, and very important, 
factor, which must not be left out of consideration. 
The main object of this article has been to direct attention 
to the morphogenetic principles, which I believe underly the 
phenomenon of “fasciation.” Along these lines I hold that it is 
explained as being the resultant of the more less equal conflict 
waged between two opposed tendencies or forces, viz.: that which, 
on the one hand, induces integrity, and that which, on the other 
induces plurality of parts. 
BIBLIOGRAPHY. 
Schleiden. “ Grundziige der wissenschaftlichen Botanik, 1843. 
Moquin-Tandon : “ Elements de Teratologic vegetale.” 
Penzig: Pflanzenteratologie, 1890. 
Masters: Pflanzenteratologie, trans. by U. Dammer, 1886. 
De Candolle, A. P. “ Organographie Vegetale,” 1827. 
Warming: “ Untersuchungen uber pollenbildende Phyllome and 
Caulome ” : Hanstein’s Bot. Abhandl., Vol. II., 1873. 
Celakovsky : “ Teratologische Beitrage zur Morphologischen 
Deutung des Staubgefasses.” Pringsh. Jahrb. d. Wiss, 
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“ Ueber ideale oder congenitale Vorgange der 
PhytomorpbologieFlora, 1884, nr. 23 & 24. 
Church, A. H. “ On the Relation of Phyllotaxis to Mechanical 
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„ “Das Reductionsgesetz der Bliithen, &c.” Sitzungsber. 
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,, “ Ueber Doppelblatter bei Lonicera periclymenum ” ; 
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