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L. S. Gibbs. 
sion between these latter is clearly shewn, with no trace of 
extraneous tissue. The position of the micropyle is normal, but 
the inner integument shows an abnormal stretching (Fig. 83, i.i.) to 
adapt itself to the increased surface; the funicle also is distinctly 
single throughout. The ovule is cut tangentially (Fig. 84). The two 
nucelli are quite distinct (Fig. 83, n.) enclosed in an inner integument 
(Fig. 83, i.i.) each containing a fully developed embryo-sac (Fig. 83, e.s.) 
in the pre-fertilization stage. The two synergidse (Fig. 83, syn.), 
oosphere (Fig. 3, Oos.), and definitive nucleus (Fig. 83, d.n.) are 
seen in the series of sections. 
Cerastium glomeratum. Tangential section of anomalous ovule. 
In Cerastium quaternellum an exactly similar case was seen, the 
division of the nucelli being as plainly marked, with both sur¬ 
rounded by one inner integument. 
Fig. 84. 
Cerastium glomeratum. Median section of anomalous ovule shewn in Fig. 83. 
The line shews the plane of section of Fig. 83. 
Hofmeister 1 describes the occurrence of two nucelli in an 
1 Hofmeister, W. Neuere Beobachtungen iiber Embryobildung 
der Phanerogamen. Jahrb. f. wiss. Bot., lid. I., pp. 82-188,1858. 
