Miscellaneous Intelligence. A35 
The yellow coloring material has no relation to cyannine. ‘Ther 
are two different substances, one insoluble in water, xanthine, the other 
: ; h . 
? 
andared. The xantheine combines easily with oxyds ; alkalies change 
it to brown of a very rich color, and of considerable strength ; but acids 
cause the brown color to disappear. 
hese are the three principal coloring ha gene of flowers. M. 
Filhol, Professor in the Facul lty of Sciences at ‘Toulouse, who has stud- 
ied ‘hie subject, confirms in general the iobdihe of MM. Frémy and 
guised or seca destroyed by mixture with the juices of white flowers. 
M. Pepin, ** Chef des cultures” at the Jardin des Plantes of Paris, 
has made sone curious observations, on the change of color which cul- 
ture produces in flowers. He has found that cultivated annuals expe- 
rience a change of tint more promptly than perennial plants, for each 
year they are renewed through the seeds. Such a change is however 
sometimes _ uced in biotintals and perennials, and rarely ever in lig- 
neous specie 
The Searaner plants of Chili, Texas and California, have a strong ten- 
dency to produce varieties with white flowers, especially when their 
flowers present either of the primary colors, red, yellow or blue. 
same is true of many other species introdued into France. Thus the 
Clarkia pulchella and C. elegans whose flowers have a violet tint, 
ored ; the Leptosiphon having red flowers, has produced pure white. 
The varieties with a white color are first produced, and afterwards the 
variegated. 
ious Memoirs.—Among the more important papers read before 
the Academy of Sciences during the last two months, we must first 
et an important memoir by M. Dausrée, Professor of Mineralogy 
n the Faculty of Sciences of Series, on the Artificial Production OF 
Minerals of the family of silicates and aluminates, by the reaction 0 
vapors on rocks. By the reaction of chlorid of silicium in rire state of 
structive action of seawater. A memoir of M. Becramp, Professor at 
the School of Pharmacy of Strasburg, on the action “which chlorid of 
of caprilic alcohol, by M. Bonts, a subject also alluded to in a former 
number. M. DEVILLE communicates new processes for preparing Alu- 
minium, and he accords in these processes with tee which = rie en 
has recently described in Poggendorff’s Anna M. MELLonI, just 
pros his death, sent in the first part of his psa on istirbshasia 
; and M. Asgta, Professor in the Faculty of Sciences at Bor- 
