The Æolian Harp.--Kircher's harp, made in 1558.--Frost and
Kastner's harp.--Manner of making the harps. 4 figures.
How to Break a Cord with the Hands. 1 figure.
An Aquatic Velocipede for Duck Hunting. 2 engravings.
Skeleton of a Bear Found in a Cave in Styria, Austria.
VIII. BIOGRAPHY.--Theodor Billroth, Prof, of Surgery at Vienna.--With
portrait.
* * * * *