1877.] 



AND HORTICULTURIST. 



141 



Beauty of Glazenwood. — Mr. Edwin Lons- 

 dale, Thorps Lane, Germantovvn, says :— " With 

 your permission, I would like to ask through the 

 columns of the Monthly, if the (said-to-be-new) 

 Japan Rose, Beauty of Glazenwood, has flowered 

 in this country? 



It will be remembered by those who have 

 seen colored plates and descriptions of it that 

 it is said to be 'a rose of golden yellow, striped 

 and flaked with scarlet or vermilion.' What 

 I am interested in is, whether it is really what 

 is claimed for it, or is it all ' a fairy tale? ' as re- 

 ports are here from England to the effect that 

 Fortune's Yellow Rose and the ' Beauty ' are 

 identical." 



[The Royal Hort. Society's Committee says 

 they are identical. — Ed. G. M.] 



Glass for Horticultural Purposes. — S. 0. 

 Knapp, Jackson, Mich., writes : — " In reading 

 the account of the late Convention of Window- 

 glass Manufacturers, held at Pittsburg, it has 

 occureii to me that there should be some effort 

 made by the leading horticulturists of the coun- 

 try to induce that Association to manufacture a 

 suitable glass for horticultural purposes. You 

 are aware that the great drawback to horticul- 

 ture under glass, is the tendency to burn, from 

 the use of defective or improper glass. And 

 could this be obviated without materially en- 

 hancing the price of the same, I think the in- 

 crease of its use would be very considerable. 

 The necessity for such an article at the Kew 

 Gardens, in England, a number of years since, 

 led to a thorough investigation of the subject by 

 scientific men, and by the aid of the solar spec- 

 trum in connection with chemical and hoticul- 

 tural experiments, I think the desired end was 

 attained, and by the use of a little oxide of cop- 

 per in its manufacture, a glass has been produced 

 preventing the permeation of a portion of that 

 class of heat-rays so objectionable at the maxi- 

 mum point of calorific action. It would not be diffi- 

 cult at the present day to ascertain just what 

 was needed, and if all did not wish to manufac- 

 ture the article, they by a system of exchanges 

 could each supply their own customers. Their 

 first Vice-President, Mr. F. L. Bodine, I notice 

 resides in your vicinity. I have only hinted at 

 this subject, hoping to attract to it the attention 

 of those capable of treating it more in detail." 



The " Ohio Lady's Experience." — L., Cazeno- 

 via, New York,writes that she has derived much ' wanted. — Ed. G. M.] 



encouragement in her efforts at window garden- 

 ing from the experience of our excellent Ohio 

 contributor, as have no doubt many of our 

 readers. 



Hot Water Boilers.— One of our most intelli- 

 gent Maryland contributors, says : " You submit 

 to the readers of the Monthly, the question 

 whether as much heat is obtained from a given 

 weight of fuel, by hot water heating as by the 

 flue. I have had considerable experience 

 with hot water heating, fitting up, &c., and 

 thought I would give the result of it, but find 

 that no sort of justice can be done the subject as 

 I think, except by small pamphlet with draw- 

 ings, and not being apt at writing and worse 

 at drawing, have concluded to leave it alone. I 

 may, however, tell you of an instance in my ex- 

 perience in which I was easily deceived. 



In addition to the glass-house heated, we had 

 two immense warehouses heated by the saddle- 

 back boilers. One of them started a leak, and 

 the manufacturer of the apparatus suggested 

 putting in a new one, with tubes, in the place of 

 fire bars, to be filled with water, of course, and 

 connected at each end with the boiler. I thought 

 the idea a good one, and assented readily, think- 

 ing thereby to save fuel and also to get up heat 

 more quickly — or, perhaps, more correctly, 

 thought to economize the heat as given out by 

 the fuel. It was a conclusion easily reached but 

 proved erroneous. I know from repeated per- 

 sonal experiments, it ivas of no advantage. If 

 there was any difference the old fire-bars had 

 the best of it. The way I account for it is this, 

 the fire-bars became red hot, and reflected the 

 heat to the boiler, very little of it escaping from 

 the ash-jiit door. With the tubular water-bars, 

 the heat at the bars wa.'j never so intense, and, 

 except in continuous firing — which by the way 

 was seldom needed — combustion was not as per- 

 fect. I am aware how difficult it is to persuade 

 the casual observer of the truth of such things, 

 but having satisfied myself by repeated careful 

 experiments, I must give the result as I find it. 



Mere opinion is a small affair in asserting fact. 

 Having wrought many kinds of boilers, have 

 found good points in most. A great deal de- 

 pends on the common sense, care and conscien- 

 tiousness of the fireman, as to economy, capa- 

 bility, Sec, of boilers generally. 



[The cold bars would no doubt deaden, the fire, 

 and just at a time when the most heat would be 



