NATURAL HISTORY MISCELLANY. 317 
GEOLOGY. 
GEOLOGICAL Survry or Iowa.— The legislature of this state has 
FO 
too ánxious about the next election t any attention to the de- 
elopment of the natural resources and mining interest of the state 
Provision. has been ma owever, for the publication of the State 
Geologist's Report, which is to be completed in the same style as the 
Illinois Geological Survey. 
New Fossit Turkey. — At the meeting of the Philadelphia Academy 
of Natural Sciences, March a, Professor O. C. Marsh of Yale College, 
exhibited a number of fossil remains from the Post-tertiary deposits of 
Monmouth E New Jersey, which indicate a new and distinct type 
of birds, closely related, apparently, to the turkey, and not unlikely the 
progenitors of the existing species. The specimens shown were portions 
of three skeletons, of different ages, which belonged to birds about the 
esting remains were refe ferred provisionally by Professor Marsh to the 
genus Meleagris, and the species they represent was named Meleagris altus. 
MICROSCOPY. 
CULATION OF THE LATEX IN THE LATICIFEROUS VESSELS. — Within a 
few days I have repeated some experiments (first made more than fifteen 
years since) upon the circulation of the latex in the laticiferous vessels of 
ore de 
Amici, Dutrochet and Mohl deny any visible motion in them except such 
as is the result of injury; while Schleiden says **that in the uninjured 
vessels, the motion of the latex can very seldom be successfully shown ;” 
even in Chelidonium majus it is only occasionally possible, and then pre- 
sents great optical difficulties 
Now, I find, by potting a young plant of this kind, and placing any 
young leaf between two strips of glass (upon which a drop of glycerine 
as been put) in such a manner as to bring the under side of the leaf up- 
