2.74 BURAL ARCHITBCTUBE. 



the . plan of having ,a dauble partition, with the hollow space be- 

 tween filled with some non-conducting substance, 



"In the first place, the frame of the sides .should be formed of 

 two :^nges of upright joists, 6 by. 4 inches; the lower ends of the 

 joists should be put into the ground mthouf any sill, which is apt 

 to let air pass through. These two ranges of joists should be- abowt 

 " tsa . two. feet and one-half 



M^^.^^^^MByM-^^M^y^^^ apart at the bottom, 



/jyA>y?;>^;>:>^?>;J-a>yJ^^^ mortised into > the 



a ^ ,.^ J ^ ^ cross-beams, which are 



Fig. 5. Manner ofnailing the boards -to the joists. fQ sUT)t)0rt the-" Upper 



floon , The, joists in the two ranges should be placed each opposite 

 another. They should then be lined or faced on one' side, with 

 rough boarding, which' need not be very tight. This boarding 

 ' should be nailed to those edges of th^ joists nearest each othir, so 

 that one range of joists shall be, outside the building, arid the other 

 inside the ice-room, or .vault. (Fig. 5.) 



"The space between these boardings or partitions should be filled 

 with wet tan, or sawdust, whichever is cheapest or most easily 6h- 

 tained. The reason for using ze«f material for filling this spae,^ is 

 that during winter it freezes, and until it is -again thawed, little or 

 no ice will melt at the sides of the vault. ■ , 



" The bottom of the ice vault should be' filled about a foot deep with 

 sbiall blocks of wood ; these are levelled and coveredwitfi wopd shav- 

 ings, over which a strong plank floor should be laid to receive the ice. 



the last eight years ; and the Eapt and West Indies, iChina, England, and the 

 South, are constantly supplied with iee from that neighborho6d., W^nham 

 Lake is now as well known in London for its ioe, as Westphalia foj its hams. 

 This enterprise owes its success mainly to the energy of Frederick .Tudor, Esqi, 

 of Boston. The ice-houses of this gentleman, built, we believe, chiefly by ' 

 Mr. Wyeth, are on a more gigaiitic scale than aAy others in the world. An 

 extra whole- year's supply is laid up in advance, to guard against the acci- 

 dent of a mild winter, and a railroad several miles in length, built expressly 

 f^; the purpose, conveys the ice to the ships lying in the harbor. 



