B 0 
K 
Thele being explained, the ropes called antari are loosely placed in the fore 
Fig. LXXI. 
part; the retinacula (1) are disposed at length over the fhoulders of the machine. 
and, if there be no place where they can be fastened, posts (K) are put slanting into the 
ground, and well rammed around, to which the ropes are tied. A trochlea (C) is then bound 
with ropes to the head of the machine, and therefrom a rope is continued to a post (K). 
where it is put round the pulley of a trochlea (L) that is tied to the post, and from thence is 
referred to that trochlea (C) which is at the head of the machine; where, winding round the 
pulley, the rope descends from the top, and passes to the windlass (P) at the bottom of the 
machine, and is there fastened. The windlass being then forced round by the levers, the 
machine without any danger raises itself. Thus by the disposition of the ropes, and joining 
the retinacula to the posts, the machine is in a proper manner adjusted; the trochlea and 
drawing rope being applied as above written. 
Fg. LXXV. DU T if a larger and more ponderous mas be to be raised, windlasses are not 
to be trusted; but in the same manner as the windlass is retained in the chelons, so is an 
axis to be inserted, having in the middle a large tympanum (M), which some call rota, but 
which the Greeks call amphireusin, and others peritrochon. 
In these machines the trochleas are not prepared in the same, but in a different manner, 
having at the bottom and at the top a double row of pulleys: the drawing rope being passed 
through the hole of the lower trochlea (L), so that the two ends of the rope, when extended, 
(2*) The commentators are not agreed on the meaning 
of the word antarii, or what ropes it signifies: some sup¬ 
pose it to be an error, and should be written ductarii; to 
which Galiani has altered it, thereby making it signify 
the ropes that draw up the weight, which it probably does. 
But I find it written antarii in five manuscripts that I 
have consulted: I have therefore retained it, as it may 
have been the common name of those ropes at that time. 
C HAPTERIV. 
Of a similar Machine of greater Power. 
(3*) The retinacula are those ropes which are used to 
sustain the machine erect, and prevent its being forced 
from its position by the weights it draws or raises; thele 
ropes extend in various directions from the head of the 
machine, and are fastened at the other end to stakes 
driven into the ground, or to any other object that may 
happen to be properly situated, and be sufficient for that 
purpose.