656 NATURAL HISTORY MISCELLANY. 
From this place to Callville, Mr. Parry estimates the distance at three 
iles. Th 
The Segoe discoveries consist in the approximate estimates of 
length of the river, made upon the supposed rate of the flow of the cur- - 
rent. ieg as have been given, make the oo parts of the Colo- 
rado proper, about tive hundred miles long, following the winding of the 
bed, which is “ very crooked.” The location of the dod of the San Juan, 
Čolořtdo Chiquito, and his general description of the character of the 
sides of the Cañon are also valuable. These are described as “flaring” 
ry 
low that supposed by Ives and Newberry to be the average depth of 
the chasm. If this is so, the bed of the stream must rise rapidly above 
the point at which it was approached by the Ives expedition, a at that 
place they made it out with the aid of their instruments to be 5,000 feet. 
It is not generally known that Dr. Newberry has been upon a iene ex- 
` pedition to this remarkable region, and that the results, though written 
out before the war, still lay unpublished at Washington. When the re- 
port of this expedition is published we may hope for more accurate infor- 
mation. i 
CHEMICAL News.—The American publishers of the Chemical News 
propose to add to the English edition a Supplement, containing Notices 
of the current Progress of Chemistry and the Physical Sciences in Amer- 
S N otices sas New Books, Review of the Markets, Movements in Trade, 
eature was inaugurated in the ig eon issue, and is 
= the ar a charge of Professor Charles A. Seel 
INSECT EXTINGUISHER. —Mingled with sane eae irrelevant matter, 
this little pamphlet contains some useful hints on the means of extermi- 
nating insects, which will be well worth its price (12 ets.) to — 
rists. Address J. Treat, Vineland, N. J. 

NATURAL HISTORY MISCELLANY. 
BOTANY. 
Ware Va LOWERS.—In the Naruratist for June Mr. 
Broadhead mentions hating seen Lobelia syphilitica and Vernonia Novebo- 
racensis with white flowers. Of the same species of Lobelia I saw sev- 
eral white flowered specimens last September, near Rock Lake, in Jeffer- 
son County, Wisconsin. I have also observed the white flowered variety 
of Vernonia Noveboracensis in Pratt County, Illinois, during the past sea- 
son. I can ad to the list of floral albinos, already brought to notice in 
