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32. AN INSTRUMENT FOR TELLING TIME BY NIGHT
This figure is included in this science for telling time by night, which one can do with this figure in the following way. Make one large copper circle containing a small one, and divide it into 24 equal parts which we call hours, designated by a.b.c.d.e.f.g.h.i.k.l.m.n.o.p.q.r.s.t.v.w.x.y.z. And the houses between the major and minor circles should be perforated and both circles connected by 12 straight lines, with the minor circle in the middle, and the minor circle should have a hole in the center through which one can look at the Pole Star while closing one eye and holding the circle toward the Pole Star, so that the circle is half a palm away from the eye, and there is half a palm's distance measured obliquely from a. to the forehead, and one palm from g. to the beard, this is so that through the perforations in the houses, one can better see the equal circumferences of the sky and of the Pole Star.

And after sunset, as the Pole Star begins to appear, and you see the two stars that sailors call the Two Brothers which revolve around the Pole Star, as the Greater Brother appears in some house or other, this is where you begin to compute the first hour of night, and then you watch the Greater Brother moving successively from one house to the next, while at the same time you watch the Pole Star through the hole in the small circle. If night has 9 hours and day has 15, if the star we call the Brother appears at sunset in house a., then by dawn, when the stars begin to fade, it will have moved to camera i. And likewise, if it appears in house b., it will have moved to house k. But if night has 10 hours, and the star we call the Brother appears in house a. in the first hour of night, then by the last hour of night it will have moved to house k., and so on successively with the others in turn until the night that has 15 hours.

Supposing that the night has 9, or 10, or more hours, and the Brother appears in a. in the first hour of night, and someone who has slept, or stayed awake at night wants to know how long he slept or stayed awake, he can look at which house the Brother has moved to, so that if he slept for 3 hours, it will have moved from a. to c., and if he slept for 4 hours it will have moved from a. to d., and so forth.

And if he wants to know how many hours there are till daybreak, and if the night has 6 hours and he slept for 3 hours, he can reckon that there are 7 hours till dawn, and so forth. This instrument is useful for knowing how long one has slept, or stayed awake at night, and how long he can continue to sleep or to wake until dawn; it is useful for night travelers by land or by sea, given that all these things are useful to know, for instance, if someone awakes too early and believes that he has overslept, or conversely.

   
35. FIGURE OF A FORTRESS
This is a good figure to measure, and we want to use it to provide a doctrine enabling one to find the right measures for artificial structures according to their use and proportion, like the pentagonal figure which is more appropriate to the form of a fortress than any other figure. Given that in the pentagon, one measure is the means of four measures, so likewise, the fortress walls must have equal measures in all four squares, and the tower's width must be of one measure equal to any of the 5, and its height must be of 5 measures equal to the 5 measures of the walls, so that they are worth 5 measures vertically and 5 horizontally in all the squares. Such a proportioned shape cannot be found in a square figure because the tower would be too short, and if the figure were hexagonal, then it would have the same number as the walls and would not be proportioned in the middle of the squares. If the fortress were configured in a heptagonal figure, the tower could not stand in the middle of the 4 squares in a numerically natural way as it does with the pentagonal figure.

37. FIGURE OF A CHURCH OR PALACE WITH A TOWER, OR A HALL WITHOUT A TOWER
The figure of a church or a palace with a tower, or the figure of a hall without a tower is derived from the 8 angled figure more properly than from any other figure, so that the belfry, or tower is 8 measures high and 2 wide, which make up a quarter of 8, and the church's body is 4 measures high and 8 measures long so it be as long as the tower is high, and 4 measures in breadth so it be immediately longer than it is wide, and it is 4 measures high so that the length matches the height. This proportionate measurement cannot be found in any other figure that could be as well suited to the purpose of a church, or palace with a tower, or a hall without a tower, as the figure with 8 angles, and this is visible in this figure which is drawn according to the said measurements.

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38. FIGURE OF A BEDROOM
A bedroom is a place for rest and sleep, and no figure is as well suited to its purpose as the heptagon, as shown in this figure which is 7 measures long, 2 measures wide, and 3 measures high including the roof, and the reason why the best suited figure of all is a heptagonal one, is that a bedroom cannot concord with any other figure in view of the purpose for which it provides shade. If its shape were quadrangular, its form would not be conducive to rest, and a person reclining in the room in which the master is reclining would be too close to him, and if it were pentangular, 2 measures wide and 5 measures long, it would be too wide, and if it were 1 measure wide and 5 long, it would be too narrow and would not have the right form; and likewise with the six angle figure as 2 measures of width would make it too wide and 1 measure would make it too narrow, and likewise with the figure of 8 angles.
We have spoken of the method of measurement suited to buildings according to the figures from which they should be derived in view of their function and use, and from the things we said about the said figures, a doctrine can be derived for suitably configuring the building of houses, portals and public places, and this doctrine is useful for those who love beautiful and well proportioned buildings.

Miniatura del llibre de las bestias

( Img: www.elmundomedieval.com)

http://membres.lycos.fr/cat1714/images/llull2.pdf

Ver texto digitalizado de los 3 sabios

 

 

Ver obras digitalizadas de Ramón Llull http://orbita.bib.ub.es/ramon/bo.asp

Ver Ramón Llull II

Ver Ramón LLull III: Construcciones





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