Book, Par.

1   IV,  17|  were kept firmly apart by beams two feet thick (the space
2   IV,  17|   fastened together. These beams were bound together by timber
3  VII,  23| the Gallic walls. Straight beams, connected lengthwise and
4  VII,  23|  be observed, and that the beams may not touch one another,
5  VII,  23|   intervening, each row of beams is kept firmly in its place
6  VII,  23|   to the alternate rows of beams and stones, which preserve
7  VII,  23|    the inside with rows of beams, generally forty feet each