Miscellaneous Intelligence. 419 
the Hamilton formation and Genesee slate of the United States. 
slates in some places give rise to brine springs and petro- 
0 
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identical, with species already described from the United States 
and Canada. The new species, also, are mostly allied to Hamilton 
fossils of the United States. It is thought probable that a con- 
tinuous band of Devonian rocks, mostly Hamilton, extends in 
a northwesterly direction — Rock Island, Ill., to the Arctic 
Ocean, a distance of 2,5 eo hical miles in a ri i 
Some species of fossils prea localities near the extreme ends of this _ 
belt, or separated by nearly 30° of latitude, are pronounced un- 
doubte wipe: f identical, showing that in paleozoic times marine tem- 
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hicago Academy and the officers under whose superintendence 
the first volume of Transactions is now being publi 
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Zoology, No. 5. 32 ages, 8vo. C pestigir ridge, without date (re- 
th 
of Ammonites contained in the snare of Coatuparative ology 
from the Lower. , Middle, and Upper Lias. The Ammonoids are 
aded._ in 
us” Ammonit tes, but the work is evidentl the 
result 0: re an careful study of og = the largest series of 
these fossils to va Seas in any museum, and may therefore be re- 
= as a y toa oa tru rue clasification as the state 
of preservation cca the spebtiaiees: sell v. 
IV. MISCELLANEOUS. SCIENTIFIC INTELLIGENCE. 
1. On convenient forms of —. with ae aye by Prof. 
Francis H. Surra (from_a communication to D, Dana, dated 
University of Virginia, Feb. 29, 1868).—The % win, 
tions of some serviceable forms of ee with flui jets may 
be of interest to a few of your 
To obtain the water- rjet, pomepolly mca to, a small glass fan- 
nel was cemented to ng in the bottom of a bucket. A 
valye was eens by wra 
buckskin, aud suspending it over the ‘funnel from one end of a lever 
mounted | upon the edge of the bucket. Placing the latter upon a 
tall tripod, and filling it with water, the operator has control of 
a a satishactory jet, which he can start and stop at pleasure. This 
us leaves, <9 nothing further to be desired i in ‘the 4 
“way sap vectually falling 
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