Life Preserving Stone. By J. D. W.
On Ventilation. By D. W.
What is Mental Action? By N. K.
Panama Railroad or Canal. By G. R. P.
A Problem. By K.
On the Gary Motor. By G. F. M.
Magnetic Motor. By G. W. W., W. A. A., G. H. F.
House Warming. By H. B. F.
The Injector. By M. A. B.
Columbus' Problem; Cure for Diphtheria; The Mullein
Cure for Consumption. By R. W. L.
A Visit to Tula. By L. R.
On Vacuum in Pumps and the Atwood Machine. By P. J. D.
On the Patent Bill. By R.
* * * * *
[OFFICIAL.]