OCTOBBB 27, 1910. 



The Weekly Florists' Review. 



81 



USE THIS SIMPLE INSTRUMENT 



-AND- 



Metallic Thermometer "A" 



Size— 8 Inches hlgrh, 4 inches wide, 2 inches deep. 

 Case made of cast aluminum, highly finished. 



Save Your Stock 



From Destruction 



By a sudden cold snap or a rapid thaw 



H^l^^ Because it is an accurate, fully tested thermometer, show- 

 ing the correct temperature at all times, and combines 

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

 greenhouse gets 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 will 

 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 I tiCC CAUrDC VATT flWh 

 TODAY. IT SHOWS MANY LuJJ JAVLHJ I UllllLLl/ 



2 2 07 piinej|s.t,r;ext 



mij* 1/11 inm j_* no /l ^^^^ p hn ej is t,r:e;e.t 



National Clock & DeCtriC Hlg. CO.,St. Louis, Missouri 



Mention The HfV'i'w wln'ii vmi write. 



grees. The use of two 1%-inch pipes as 

 flows will furnish all of the steam re- 

 quired, and two l^^-inch pipes as flows 

 would probably answer. 



ON SLOPINQ GROUND. 



I have built two greenhouses, one of 

 them 25x100 and the other 9x100, even- 

 span, running east and west. The 

 boiler la in the northwest corner of 

 the greenhouses and about seven feet 

 below the ground level. It is a sec- 

 tional hot water boiler. I should like 

 to know how to pipe these greenhousen, 

 using 2-inch pipe everywhere, except 

 for the main and return. 



Owing to the sloping of the ground 

 from west to east, I was obliged to 

 build the benches in three sections. 

 That is, one bench the entire length 

 of the house would be too high at one 

 end and low at the other, while by 

 dividing the benches into three sec- 

 tions I could keep each section level. 

 I intended to use one main pipe and 

 two returns under each bench in the 

 houses, the main pipe to fall to the 

 east end and the returns to fall to the 

 west end, but as the benches are built 

 in sections, I cannot use this system 

 of piping. The ground falls about 

 three feet from west to east. I also 

 intend to use four 2-inch pipes along 

 the wall on the north side. I am lo- 

 cated in western Maryland. B'. W. 



Unless there is some special reason 

 for having a part of the returns under 

 the benches, it is suggested that for 

 the house 25x100 feet four 2-inch flow 

 pipes and the same number of returns 



Mention The Review when you write. 



