3h4 New Publications. 
Tatus' rig0fo-lacunofus cinereus 5 feutellis fparfis lateralibtis, 
marginalibufque pallidis!’ 9. Lich. faftigiatus': fubcartila-" 
ginéus erettus cefpilofus ramofus; ramis fafligiatis teretiuf>' 
ciclis lacunofis fierfum incraffatis fubinermibus; feutellis feffi=’ 
libus terminalibus. 10. Lich. calicaris: fubcartilagineus 
ereéius linearis ranwufo-pinnatifidus, compreffus lacunulofus 
pallidus; feutellis pedunculatis convexts fparfis.' V. Farther 
examination of Stahlfwerd’s theory refpecting the ftrengtlr: 
of the walls of fortifications, by A. Sjoberg, with figures. 
VI. Geometrical effay on the motion of bodies drawn from 
or towards a given point in the inverfe double ratio of the 
diftance from that point, by J. Svanberg.  Neitheriof thefe 
papers, which ate to be continued, will admit of abridge- 
ment. 
Afhbandling om. Telegrapher och firfok til en ny inrlittning 
| diras, &c. A Treatife on Telegraphs, and anew Conftruc- 
tion of one, by A..N. Edelcrantz, Counfellor of the Chan- 
cery, one.of the Eighteen of the Swedifh Academy, &c. 
Stockholm, 1795. 95. p. 8. with five copper-plates and ~ 
three tables, 
When people with to.tranfmit intelligence to others, at 
diftance, in'a quicker manner than by letters or meflengers, 
it ean be done only by fignals, but two different ways: either 
by fingle fignals, which, according to previous agreement, 
convey whole-ideas ; or, by feveral {neceflive fignals, which, 
by. reprefenting letters and words, anfwer the fame purpofe.. - 
The firft Kind jof fignals were employed. in the earlieft pe- 
riods, and fome.of them were fuited to the ear as wellas to 
theeye;, For the eye the ancients employed fixes and fmoke, 
torches, flags, and, in modern times, fky-rockets have beer. 
ufeds .For the ear they employed drums, and. trumpets > 
and, fince the invention of gun-powder, the firing of cannon, 
has been applied to the like ufe... But even all thefe,are in- 
capable of expreffing what could be communicated by fpeech, 
and writing; and to accomplith that object, by figns capable 
. ef 
