August 17, 1907. 



HORTICULTURE 



111 



The Best Thing i ou Ever Put in Your Greenhouse 



PERFECT CIRCULATION IN ALL DEGREES OF WEATHER 

 ABSOLUTELY ASSURED BY THE USE OF OUR ELECTRIC CIRCULATOR 



Rutherford, N. J., June 26, 1907. 

 Messrs. W. W. Castle Co., 170 Summer St., Boston, Mass. 



Gentlemen :— Vour inquiry regarding the Circulators received and in reply beg to say 

 that the four Circulators now in operation have been more than satisfactory. We can give 

 special commendation for the work you have rendered in connection with our old steam 

 system, which heated at the time something like 30,000 

 square feet of glass. 



Since changing this steam system to a hot-water 

 system, it has not only taken caie of the 30.000 square 

 feet of glass to our entire satisfaction, but we have 

 heen able to add several more houses and sheds to 

 the svstem without the least trouble. 



The piping in this range was very defective, and 

 after the slight changes which were made, the Circu- 

 lator now lakes care of it all. and we would not want 

 to be without it for fi\e minutes in cold weather. 



Vou may book 

 ■ mr order for an- 

 other C i rcula tor 

 which is to go on 

 tlie battery of boil- 

 ers under the pack- 

 ing shed, of \\'hich 

 we spoke to your 

 Mr. Congdon upon 

 Ills last visit. 

 \'ery truly yours. 



(Signed) 

 Julius RoehrsCo. 



Clifton. N. J.. June 25, 1907. 

 Wm. W. Castle Co.. Boston. Mass. 



Gentlemen : — After a season's use, 



would say that I can conscientiously say 



that the Circulator does 



all that you claimed it 



would do. 



We are using a six-inch 

 Circulator to care for 12.000 

 feet of two-inch pipe, and 

 have it attached to the main 

 return nearlhe boiler. Run- 

 ning the system under 

 gravity, we are able to get 

 a temperature of 105 to no 

 degrees in the main return, 

 but within ten minutes 

 after startingthe Circulator 

 we get 130 to 135 degrees, which 

 I consider excellent work. I have 

 not attempted to figure out the 

 saving in fuel by using the Circu- 

 alor. but It must be quite consid- 

 erable; the boiler can do its work 

 with far less forcing, and thus a 

 smaller boiler and less piping 

 would do the work than would 

 be ncccssar\- under the gravity 

 system. With our large houses 

 475 feet long, we could not possibly heat them 

 satisfactorily without either the Electric 

 Circulator or some other system of forced 

 circulation. 



Yours very truly, 



(Signed) Robert Simpson. 



The Electric Circulator 



My Dear Sir: — It is a pleasure to be able to report that during the 

 past very severe winter we have used 73 tons of coal as against 99 tons 

 consumed during the winter of 1904-1905. The saving, as you will see. is 

 about 25 per cent during the most severe and protracted winter we have 

 ever experienced. We compare with an average cold season that above 

 named, and conclude that your Boiler and Circulator is a mighty good 

 investment for any one who wishes to improve their heating system. 

 Yours \ery sincerely 



(Signed) E. O. Orpet. 

 P. S.— I endorse all of the above.— E. V. R. Thavhr. 

 So. Lancaster, Mass. 



Dear Sir :— The Circulator installed for me last fall has given me entire 

 satisfaction and works well. With the quick circulation recei\'ed from its 

 use there certainly is a saving of fuel, and if a person with a system not 

 piped so as to get a good circulation was to tr\' the Circulator before 

 laying out too much expense on alteration of piping, I believe he would 

 receive the benefit required. Cordially yours, 



A'et'd/iam, Mass. (Signed) Paul E. Richwagen. 



Gentlemen :— Yours, asking in regard to our experience with >our 

 Circulator which you installed for us last fall, is at hand. . . We consider 

 it a splendid thing for it gives the rapidityof a steam circulation on a hot- 

 water system. . . . 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, 



Scarborougfi, A' }'. (Signed) F. R. Pierson Co. 



Dear Sir : — Having had plenty of zero weather with wind all through 

 the past winter, the Circulator has had a tyrant to cope with. I am 

 pleased to say that it has proven convenient, economical and necessary. 

 I cannot say too much for its efficiency, and you are at liberty to refer 

 any one to me who is interested in securing a positive circulation for hot- 

 water heating with the least expenditure for fuel. 



Biddeford, Me. (Signed) Chas. S. Strout. 



Dear Sir: — !t is a pleasure to recommend your Circulator for the very 

 efficient work it does for me. I have two greenhouses each 200 feet long 

 piped for steam with I'i'-inch pipes, and can operate them perfectly with 

 hot water by using the Circulator ; in a very short time it brings the 

 returns nearly as hot as the flows. As I have two of the Circulators in use 

 under different conditions, I am well able to judge of the work they are 

 capable of doing, and would not like to part with either of them. 

 Yours truly. 



Waverley. Mass. (Signed) William W. Edgar. 



I believe the Circulator is O. K., and I know it would have been 

 impossible for me to keep my large new house from freezing if it wasn't 

 for the Circulator. 



Defiance, O. C. Winterich. 



Dear Sir:— The Boiler and Circulator installed by you last Fall has 

 given entire satisfaction. I have saved at least twelve tons of coal, and 

 have given Mr. Congdon an order this day for one of the largest Boilers 

 vou make, to be put in at the Stone property on Nelson St.. Leominster, 

 it is the best Boiler I ever had. Yours respectfully, 



Leominster, Mass. (Signed) J. Fuller. 



The above are a few testimonials regarding the Circulator. 

 No boiler ever built for greenhouse heating can compare in good results with our 



STEEL PLATE HOT-WATER BOILER 



The Boiler and the Circulator in operation will be on exhibition at the 

 S. A. F. Convention at Philadelphia. Don't fail to see them. 



W. W. CASTLE ^l 170 Summer St., Boston 



