94 



HORTICULTURE 



July 27, 1907 



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DO YOU NEED ANYTHING 

 MORE TO CONVINCE YOU? 



Read carefully this testimonial and those that we have already pub- 

 lished. Don't Delay — Frosty Nights are Due in Eight or Ten Weeks 



Tarrytown-on-Hudson, New York, July 22, 1907. 

 WILLIAM W. CASTLE CO., 



170 Sumrrer St., Boston, IVass. 

 Gentlemen: — Yours, asking in regard to our experience with your circulator which you 

 installed for us last fall, is at hand. 



Owing to the late completion of our houses, we could not test it accurately for coal econ- 

 omy, but we intend to give it a thorough test in this respect the coming season. WE CON- 

 SIDER IT, HOWEVER. A SPLENDID THING IN OTHER RESPECTS, FOR IT GIVES THE 

 RAPIDITY OF A STEAM CIRCULATION ON A HOT-WATER SYSTEM. This is a particu- 

 larly valuable adjunct to a water system, even on a scientifically proportioned heating system, 

 such as we have just installed, where the water mains are eight-inch mains, so arranged to 

 remove every particle of friction, allowing the most perfect circulation by gravity. 



We have your Circulator installed on TWO of our new houses, which were erected last 

 year and which are 350 FT. LONG AND 56 FT. WIDE. The size of these houses will better 

 be realized when we state that they are equivalent to twenty regular 100-ft. houses 20 ft. in 

 width. In these large houses we can bring the water back to the boiler within less tKan ten 

 minutes from the time the Circulator is started, so that the water returning to the boiler 

 is within a few degrees as hot as when it leaves the boiler. This makes every hot-water 

 pipe all through the range EQUALLY HOT AT ALL POINTS, and is a particularly valu- 

 able feature after a bright, sunny winter day, whsn the thermometer suddenly drops after sun- 

 down, as we can circulate the water as rapidly as steam could be circulated. 



If it is valuable in a range like ours, where everything is scientifically balanced to 

 remove all friction, it would be DOUBLY VALUABLE on the AVERAGE place, where the 

 mains are invariably small and where the circulation is very badly retarded by friction. We 

 were doubtful as to whether it would be of particular value to us under our conditions, as 

 ve had made the system as perfect as it was possible to make it, without regard to the initial 

 expense in the installation of the system, considering it far better economy to have our pipe 

 larger than was necessary, so as to remove all possible friction; but, EVEN UNDER THESE 

 CONDITIONS. WE HAVE FOUND IT A GREAT ADVANTAGE, but we believe that to the 

 average grower, with the ordinary hot-water system, it will be found of INCALCULABLE 

 VALUE, and, undoubtedly, a very great economizer in coal consumption, as it will enable one 

 to get a GOOD DEAL BETTER RESULTS from the fuel burned than if the water was 

 circulated alone by gravity. 



We were somewhat afraid of the expense in running the Circulator at first, but find 

 that it is not necessary to run it continuously. It can be run fifteen minutes, and can be 

 stopped for an hour and a half, and then run again for fifteen minutes, so that the amount 

 of electrical power expended is unexpectedly small. FROM A MECHANICAL STANDPOINT, 

 IT IS PERFECT. Any one can operate it, and it certainly seems to us an INVALUABLE 

 ADJUNCT TO A WATER SYSTEM. 



We should be glad to have any one call and inspect it at our Scarborough place, where 

 it can be seen in operation, any time after we begin to fire in the fall. 



Very truly yours, (Signed) F. R. PIERSON CO. 



The installing of the Circulator in Mr. Pierson's place was our first opportunity to demonstrate 

 its value in a plant recognized as the most modern and best equipped in the country. Our main 

 business previous to this was to correct imperfect circulation due to defective piping and Ooi/Of' 

 inam I suggested to Mr. Pierson the type of boiler he should use — approximately the same as we 



are building at the present time. Unquestionably He Has the best gravity hot 



watef system on this continent yet anyone who will carefully peruse the above letter will see 

 how greatly the Circulator has improved what I consider a perfect system of hot-water heating. If 



the results in such a system have been what Mr* Pierson indicates 

 how much more shouM the improvement be in a defective one ? 



Considering the testimonials of Mr. Pierson, Julius Roehrs, W. W. Edgar, Robert Simpson 

 and others which have already been published, I ask in fairness whether the florists of this country 

 need anything more to convince them of the absolute \ alue of this apparatus. 



Keep in mind our Boiler and Heating Systentm n you wish a cheap second- 

 hand boiler we have some to sell — steam and cast-iron hot-water. Although we do not recom- 

 mend them we can quote you very low prices as we are removing quite a few. 



W. W. CASTLE 



HEATING 

 ENGINEER 



1 70 Summer St., Boston 



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