Lib. 1.
Chap. 2. Natural Philosophy is likewise necessary for him for to discover what are the Causes of many things which he must put a remedy to.
He ought also to know something of Physick, to know the qualities of the Air, which makes Places Healthful and Habitable, or the quite contrary.
He should not be ignorant of the Laws and the Customs of Places for the Building of Partition Walls, for prospect and for the conveying of Waters and Sewers.
He ought to know Astronomy, that he may be able to make all sorts of Dials.
It was necessary among the Ancients, that an Architect should have skill in Musick to make and order Catapults and other Machines of War, which were strung with strings made of Guts, whose sound they were to observe, that they might judge of the strength and stiffness of the Beams which were bended with those Strings. Musick was also necessary in those days for the placing musically Vessels of Brass in the Theatres, as we have said before.
ART. III.
What are the Parts of Architecture.
