Novembsr 30, 1907 



HORTICULTURE; 



72S 



The Electric Circulator 



Maunfactured and Installed by us is the only 

 machine of its kind in use today for green- 

 house hot water heating. Its strong points are 



SIMPLICITY 

 PRACTICABILITY 



It is NOT A 



THEORY. Its 



value has been 



FULLY 



PROVEN. 



DON'T 



MISLED 



by so-called 

 "im pro ve- 



ments " 

 which exist 

 on PAPER 



ONLY. 



This cut illustrates one and 



THE ONLY 



ONE 



which has ever 

 had a trial thus 

 far. It has 

 been on the 

 market since 

 1905. It is in 

 use in many of 

 the largest 

 gree nhouse 

 establishments, 

 commercial and 

 private, and is 



GIVING 

 FULL 

 SATISFACTION 



All references and testi- 

 monials regarding forced 

 circulation bv electric circu- 

 lator REFER TO THIS MACHINE ONLY. 



«•■* AS AVI r tttmmnmtiw, HEATING ENGINEERS 



THE CASTLE COMPANY, I70 Summer street, Beston 



Then there is another highly interesting feature of the U-Bar construction. When you 

 are on the inside you think the house is much wider than it really is. The extreme 

 lightness, the unobstructed freedom is what does it. Mr. Pierson says : " It's just lil<e a 

 bubble of glass " — "a regular Sunshine Shop," and that comes the nearest to describing 

 it. Just make a mental comparison between this interior, with its curved eaves and 

 total absence of heavy members, and any construction used by other builders. Send for 

 the catalog, then send for u=. Pierson U=Bar Company, Designers and Builders 

 U-Bar Gn'c-iihouses, Metropolitan Building, 4ih Avenue and 23rd Street, New York. 



