I4 INTRODUCTORY SUGGESTIONS. 



sq. ft. of glass. If a variety of stuff is grown, twice the 

 help is necessary. 



17. With hot water, 15 tons egg hard coal. 



One good man should give good results in two houses 

 20 x 100 ft. 



18. I burn on an average 200 tons of hard coal per 

 year to heat ten houses 9 x 100 ft., 8 ft. to ridge, and four 

 houses 21 x 140 ft., 10 ft. to ridge. Temperature at 

 night, 50 to 60. 



I want one man to each 5,000 sq. ft., if there is little 

 potting to do. 



19. In tomato growing, it costs me about $50 per year 

 for such a house, with coal at $3.30 per ton. 



One spry workman should do the work in two tomato 

 houses 20 x ico ft. 



20. Two houses 20x100 ft. of tomatoes will keep one 

 man occupied. As usually heated hereabouts ["Carna- 

 tion belt," Chester county], the firing could be done by 

 the same person if he is an interested participant in the 

 crop returns. The tomato ranges are usually two or four 

 houses heated with hot water circulation, and seldom 

 require re-coaling during the night. 



21. I have had no experience with growing roses. With 

 carnations I find that it takes about 5 tons (long) coal for 

 i,ooo feet of glass. Some winters rather more, but mostly 

 less. I find it takes about this, no matter what system of 

 heating is used (flue or hot water), if used with all care 

 in both cases. But by using pea coal in our horizontal 

 tubular boiler we effect a saving in cost, as it takes little 

 or no more pea coal than it does broken or egg. 



In our business it takes about one man to 5,000 sq. ft. 

 of glass, during the forcing season. 

 NEW JERSEY 



22. My rose house, 20x80 ft, consumes about 9 or 10 

 tons of coal yearly. 



Two houses, 20 x 100 ft., are enough for one man in rose 

 growing, and he should have a boy to assist him in busy 



