OeroBiB 6, 1010. 



ThcWeekly Florists' Rcviev). 



77 



USE THIS SIMPLE INSTRUMENT 



AND- 



Metallic Thermometer **A 



SizK— S iQchea hiKh, 4 inches wide, 2 inches deep. 

 Oase made of cast aluminum, highly finished. 



Save Your Stock 



From Destruction 



By a sudden cold snap or a rapid thaw 



U^^|^9 Because it is an accurate, fully tested thermometer, show- 

 ■ ■ ^^ ■' • ing the correct temperature at all times, and combines 

 a device 'which ^^ill ring a bell at your bedside 'when the 

 greenhouse g^ts either too hot or too cold. Just the protection 

 you have wanted all these years. 



We guarantee that results will be obtained at all times. This device 

 has been subjected to the severest tests in our laboratory for over two 

 years, and at the same time has given entire satisfaction, under all con- 

 ditions, to many users in the trade. 



All you have to do is to set the pointers at the highest and lowest 

 temperatures you want and the thermometer will do the rest. It vi^ill 

 ring a good, loud bell when either point is reached, and saves all worry 

 over trouble from sudden temperature changes. 



INVESTIGATE IT TODAY 



SEND FOR OUR CATALOGUE T AOO CAI/DDC VAIT KVVh 

 TODAY. IT SHOWS MANY LUuU jAf LHu I UU IlLLl/ 



National Clock & Electric Mfg. Co.,st louis, lisomi J 



Mention The Hcvifvv w h'li y<iii write. 



inch flow divides at the ridge. These 

 flows will have about four inches of fall 

 toward the north end. Will this piping 

 maintain a temperature of 50 to 55 de- 

 grees in zero weather? Occasionally in 

 southern Kansas we have a "snap" 12 

 to 15 degrees below zero. Would it be 

 better to continue the 2%-inch flow to 

 the north end, instead of the two 2-inch 

 flows f 



What size of hot water boiler will be 

 needed for this plan, and what size of 

 radiators? Would 1%-inch pipe be too 

 small for the returns? Any suggestions 

 or information will be highly appreci- 

 ated. C. H. C. 



As it will require 375 square feet of 

 radiating surface to maintain a temper- 

 ature of 55 degrees in the greenhouse 

 and at least 150 feet for the dwelling, it 

 will not be advisable ro try to supply 

 the two with a 214-iuch main, nor will 

 a 2-inch main feed the coils in the green- 

 house. Either run a 3-inch main from 

 the boiler to the north end of the green- 

 house, and, after taking off a 2^-inch 

 supply pipe for the greenhouse, continue 

 it as a 2^-inch supply pipe to the dwell- 

 ing, or run independent 2%-inch supply 

 pipes for the greenhouse and dwelling. 

 In addition to the foregoing and a 2^- 

 inch return from the dwelling, there 

 should be seven 2-inch returns in the 

 greenhouse, the odd one being on the 

 west side. Each coil should have a 

 2-inch connection with the main flow 

 and return. If preferred, l^^-inch pipe 

 could be used, putting in nine instead of 

 seven. 



The heater should have a rating for 

 at least 600 square feet of radiation. 



Mention The Review when you write. 



