[ea TI 
4re to have aCommunication from oné 
Box to the other; the lower Commu- 
nication being on the Floor, our La- 
bourers, with their Burdens may readi- 
ly and eafily afcend into either of the 
Boxes: ‘The upper Communication is 
only intended as a Paflage between the 
Boxes, refembling the little Holes, or 
narrow Paffes, which may be obferved. 
in the Combs formed by our fagacious 
Architects, to fave Time and fhorten 
the Way, when they have Occafion 
to pafs from one Comb to another ; 
juft as, in populous Cities, there are 
narrow Lanes and Alteys, pafling 
tranfverfly from one large Street to 
another. | 
In the next Place you are to pro- 
vide a loofe Board, Fig. K. half.an 
Inch thick, and large enough to cover 
the Side where you have made the 
Communications. You are likewife — 
to have in Readinefs feveral little Iron 
Staples, 
