: 
: 
Botany and Zoology. 439 
by insects to the ovule of the female flowers, at an earl , before 
the nucleus is covered by the ovular coat or by the perianth, and. before 
the former has produced its styliform apex, down which it would be 
nearly impossible to convey the grains of pollen which were bodily found 
on the nucleus, with their tubes there produced. So that oe 
lutel 
in “the free embryo-sac being filled with endosperm-cells previous to 
ee the numerous secondary embryo-sacs, the position of the 
minal vesicle at the base of these sacs, and in the high development 
of re long tortuous suspensor.” There is an agreement with Angio- 
sperms, ere in several particulars, especially in that of “the ger- 
minal vesicle giving rise to one embryo only.” And it is concluded Bet 
in special reference to Santalum and Loranthus, “ Welwitechia presen 
an embryogenic process intermediate between that of Gymnosperms ns 
Angiosperms.” 
And here we should not omit to mention that its wood differs from 
that of all known Gymnosperms in wanting the disc-bearing wood-cells ! 
It will be conceded that Welwitschia is “ the most wonderful discovery, 
in a botanical point of view, that has been brought to light during the 
present century.” Also, that Dr. Hooker has enjoyed (and improved) an 
opportunity snequalled bg do a4 botanist since that which placed the 
ro 
4. American Tea-P lant. ay newspaper announcement wien se the 
Tea Piant has been discovered by a Chinaman (or 
Englishman formerly engaged in the tea-culture in poets 2 in the Gaited 
States, “cov vering a large area a of land in _ central counties of Penn- 
Aunsriciin us, the Vew ee Tea, the as of whi hy were used ne “- 
purpose at the beginning of the American revolution. Some on 
remarked that the substituted beverage must have tried the patriots ] 
our great-gran ndmothers ; but others report more favorably of its -” ag 
ihisdgn sa and subtracting from each angle the azimuth of 
the sun for ‘ae estimated central time of observation, I obtained the fol- 
lowing results. Only one plant, bearing four old leaves, gave an average 
