362 BOTANICAL GAZETTE [MAY 
MM. RENAULD and Carport describe in the ninth fascicle of their Muscz 
exotict novi vel minus cogniti® a large number of species of mosses of Costa 
Rica and Mexico.—C. R. B. 
r. A. W. Evans has published? a monograph on the Hawaiian Hepa- 
ticae of Schiffner’s tribe Jubuloidez, with full descriptions and sixteen admi- 
rable plates. Eight new species are described. The collections of Mr. C. M. 
Cooke, Jr., made in the summers of 1897, 1898, and 1899 mainly on Oahu and 
Kauai have furnished a large amount of interesting material.—C. R. B 
Tue farmer's bulletin no, 112, on Bread and the principles of bread 
making, prepared by Helen M. Atwater, is botanical in so far as it deals 
with yeasts and the structure of grains. Both these topics are treated most 
inaccurately. Indeed the whole bulletin strikes one as an inexpert compila- 
tion which experienced bread makers will laugh at and the aac 
consult in vain for help.—C. R. B. 
Mr. R. G. LEAvitT has published? the results of some experiments to 
determine whether or not the roots of orchids and the shoots of Tillandsia, 
Sphagnum, and Leucobryum could condense water vapor from moist air. His 
results confirm those of Nabokich, published shortly before,” and it now seems 
highly improbable that the structures like the velamen of orchid roots and 
the hyaline cells of sphagnum are adapted to secure water in the form of 
vapor.— C, R. B 
A PECULIAR embryo-sac in Peperomia pellucida is reported by D. H. Camp- 
bell." The megaspore originates in the usual way, but after the third division 
of the megaspore nucleus the eight nuclei are arranged about the periphery 
of the sac without any suggestion of polarity or differentiation in egg-@PpP* 
ratus, antipodals, and polar nuclei. The most striking fact is that still 
another division takes place, giving rise to sixteen nuclei, which are also 
arranged about the periphery of the sac. One of the nuclei in the micropylar 
end of the sac enlarges somewhat, and is to be regarded as the egg nucleus, 
but there are no distinct synergids, and no antipodals, although there is some 
grouping of a variable number of nuclei in the chalazal end of the sac. In 
one case the male nucleus, which is small and somewhat spirally coiled, was 
observed within the egg. The first division of the embryo, which has no 
° Bull. Soc. Roy. Bot. Belg. 38: 1-48. (Paged 1-48, and bound in second fascicle 
of vol. 38, but not continuous with remainder of fascicle.) 
7Trans. Conn, Acad. Sci. 10: 387-462. pls. gg—59. 1900. 
8U.S. Dept. of Agriculture. 
9° Rhodora 2:29, 63. I900. 
* Résumé in BoT. GAZ. 29: 222. March 1900. 
Ber. d. deutsch. bot. Gesell. 17: 452-456. pls. 97. 1899. See also Ann. Bot. 13° 
626. 1899. 
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