494 Scientific Intelligence. 
inevitableness of cross-fertilization by the visits of insects is the 
more advantageous.” But this is not our author’s thesis. It 
comes to this: the plan of nature is either cross-fertilization sup- 
7. On the causes of the change in form of Etiolated Plants; 
by Professor Goptewsk1, Dublany (Poland). Bot. Zeit. 6, 1879. 
—In 1873, Professor Godlewski published in Flora an secein of 
his investigations respecting the formation of starch in chloro- 
phyl grains. In that memoir he stated that the changes in form 
that it is 5 chiel of assimilated matte freshly formed in 
growing green reg themselves that they expand to their full 
size, and he e diminutive size of etiolated leaves is thou 
by him to be directly desetseun upon the absence of the assimi- 
lative process. 
In Professor ——-! experiments germinating plants were 
a diac in an atmosphe oa eprived of its carbonic acid, some 
of them in light, o aloe a in perfect darkness, but under similar 
ieedacicos of temperature said moisture. It was found that when 
ce gr the total weight of dry organic matter was the 
same in the green and : the etiolated plants. The plantlets 
zoel had grown in the t but in air free from carbonic acid, 
ir normal hebies G. a 
IV. Astronomy. 
1. Orbits of the binary systems, ju ems and 298 Struve ; 
by W. Bersr.—The double star yu Moral s had been observed 
since 1858, and has shown a change of shctat 180° in the position 
rene though the observations, twenty-eight in number, and by 
all trast welve eet observers, exhibit large discrepancies and are not 
Me 
“The orbit was computed by Herschel’s first method and agrees 
with the in terpolation curve quite closely. The corrections to 
