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Febboabx 9, 1911. 



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t 



The Weekly Florists' Review* 



The " National " Differential 

 Temperature Alarm 



is a big improvement over all other existing thermostats— 



Because — Its sensitiveness and accuracy of action makes its use 

 invaluable to the florist. 



Because— Its mechanism is constracted of the very best material, 

 thus guaranteeing a durable instrument. 



Because — This instrument can be regulated to allow a difiference 

 of only two degrees in temperature. 



Because— It is not affected by dampness and can be placed any- 

 where without destroying its accuracy. 



Because The use of this instrument will give you absolute con- 

 trol over an important feature of your business. 



Because — Its immediate alarm at the cold or hot danger point 

 means protection for you against damage by cold or waste of 

 fuel by excessive heat. 



Because— We guarantee that actual results will be obtained at 

 all times. 



Because — it costs only $6.00 f. o. b. St. Louis, including: oO feet of 



,^^ rub* ler-covered wire, 2 bells, 2 dry cell batteries, 1 dozen knobs and cleats, 

 and it may save you hundreds of dollars' damage. 



85 



The "National" Differential 

 Temperature Alarm. 



Size, 5^ in. by S'^s in. by 2 in. Casing made 

 of she<>t brass, finished in either brush 

 brass or oxidized. 



Anyone can put it up. Try one this year — You'll have them in every house next year. 

 Send for our catalogue today. It shows many loss savers you need. 



NATIONAL CLOCK & ELECTRIC MFG. CO, 



2207 Pine Street, ST. LOUIS, MO. 



Mention Tbe Revlev when von write 



Emergency Pipe Clamps 



To repair splits 

 and rust holes 

 on pipe. Made 

 of malleable 

 iron, and guar- 

 anteed to stop 

 the leaks. 



Send for cat- 

 alogue of 

 Pipe Repairs and Steam Speolaltlea 



JAMES McCREA & CO. 



Manufacturers 

 558-560 Washiagtoa Blvd., CHICAGO 



Mention The Keview when yon write 



Ford & Kendig Co. 



"SpeUerized" Wrought Pipe 



I>ai>eclally adapted for Greenhouse Work, 

 Flttlnsrs, Valves, Tools, etc. 



1428-30-32 Callowhill St , PHIUDELPHIA, PA. 



Mention The Review when too write. 



main vertically to a point two feet be- 

 low the ridge, and then run a 2-inch 

 overhead flow in each direction; con- 

 nect these at either end of the houses 

 ■with eight 1^4 -inch returns. These can 



I 



Snocessors to the 

 John Davis CompanT 



No loss from sudden drops in 

 temperature if you use the 



Hughson Regulating Valve 



In connection with a steam heatlnff plant. Carrr 40 or 

 50 pounds pressure on the boiler and set tbe valve for 5 

 or 10 pounds— it will do the rest. You'll be free from 

 worry this winter, if ymi follow this advice: " Install a 

 HuKhson RegxilatlnB Valve when making your 

 repairs " Ask for our Catalogue, which also shows 

 Steam Traps and other devices. 



HUGHSON STEAM SPECIALTY CO. 



5021-S023 S. State St., CHICAGO, ILL. 



Mention The Review when vou wrtto 



