THIRTY-EIGHTH ANNUAL CONVENTION 301 



its merits to those who may be so situated that they can use the 

 system to advantage. 



The Insulated Ice House System. 



From drawing No. 9 you will get some idea of the insulated 

 ice house system. The ceiling in the ice storage should be as 

 high as possible, 16 to 22 ft. and 6y 2 to 7% ft. in the butter stor- 

 age part, or refrigerator, as we will call it. The wall between 

 the two rooms need not be insulated, but should be as near air 

 tight as possible, except at the floor and ceiling where openings 

 should be provided for cold air to pass into the refrigerator at 

 the floor, then as it gradually warms up a trifle it will raise to 

 the ceiling, and finally pass back into the ice room through the 

 air flues and again come in contact with the ice depositing any 

 surplus moisture on the ice which will be carried off by the ice- 

 water. These air flues are necessary in order to make the air 

 pass way over to the further wall so as to make a complete 

 circulation in the whole room. The total area of the openings 

 at the floor and ceiling should equal about 600 square inches 

 each, so as to allow free circulation. Some means should also 

 be provided for closing these during winter to keep the refrig- 

 erator from getting too cold. 



The walls and ceiling in both rooms should have 3 to 4 

 inches of corkboard or some other good insulating material, its 

 equal in efficiency. Corkboard can be set right against a con- 

 crete or brick wall in cement mortar or nailed against a frame 

 wall and then finished off with a cement mortar, one part Port- 

 land cement to two parts sharp sand. A hot Asphalt-pitch pre- 

 paration can be used to take the place of the cement plaster. The 

 manufacturers of the different insulating materials will give 

 you full direction how to apply same. 



The floors should be laid as follows : First, grade off your 

 ground level and cover with 5 or 6 inches of cinders or gravel, 

 then lay a 4 to 5 inch lean concrete floor smooth but not trow- 

 eled ; over this place a 3 inch corkboard in hot asphalt and finish 

 with a 4-inch concrete floor one inch being facing. The floor 

 in the ice room should have }i inch slope to the foot and as per 



