7. Another representing a saurian reptile on large granite bowlder is
also a neighbor (a glacial dropping).

8. Old river emptying into Lake Managua reveals fossil bones; moraines
east of it are found.

From these data we see the glacial action was prior to the sedimentary
rock here, and had spent its force when elevation of coast range
occurred. No nearer estimate is possible.

As the fossil horse occurs here, our mounted man may have domesticated
him, and afterward slaughtered for food like the modern Frenchman.
Unfortunately Prof. Cope did not find a similar inscription.

EARL FLINT.
Rivas, Nicaragua, October 27, 1891.

* * * * *




FURTHER RESEARCHES UPON THE ELEMENT FLUORINE.

By A.E. TUTTON.


Since the publication by M. Moissan of his celebrated paper in the
_Annales de Chimîe et de Physique_ for December, 1887, describing the
manner in which he had succeeded in isolating this remarkable gaseous