Note 5 — [Continued from Supplement No. 384, page 6127.] THE HISTORY OF THE ELECTRIC TELEGRAPH.4

Abbe Moigno, in his treatise on telegraphy, assigns the date of 1838 to this publication; but Mr. Zetsche (d.c.) gives it as 1811. We shall consider the latter as the true date; for, in 1838, there was no reason for publishing Soemmering's memoir, and especially for proposing improvements in his apparatus.