New experiments on electricity, wherein the causes of thunder and lightning as well as the constant state of positive or negative electricity in the air or clouds, are explained … Also a description of a doubler of electricity, and of the most sensible electrometer yet constructed. With other new experiments and discoveries in the science .. Q Science
Brehms Tierleben; allgemeine kunde des thierreichs. Mit 1910 abbildungen im text, 11 karten und 180 tafeln in farbendruck und holzschnitt. Q Science
