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Grape Growing' at Goderich. 



Siu, — Having seen Mr. C'liniei-on's paitial 

 recommendation of Rogers' No. 3, I will con- 

 firm wliat lie says aliont its setting poorly at 

 times. It set so poorly with me iliat I can- 

 not recommend planting it, altliougli it is a 

 good grape, about as eai'ly as Moycc. 1 have 

 thirty-five varieties, and my exhibit at the 

 (ireat Western Exnibition ut (ioderich last 

 fall helped to make the grape exhibit the best 

 in the Province, i.e., of out-dior grapes. I 

 had single bunches of Rogers' No. 4 and 

 Eaton tliit weighed 2 lbs,, and other varie- 

 ties which weighed nearly as much I will 

 name three of the best varieties of grapes, 

 according to my experience : Rogers' No. 4 

 (black), Vergennes (red) and Moore's Dia- 

 mond (white). These are all sure croppers, 

 of excellent (juality. Rogers' No. 4 is as pro- 

 lific as Concord, it has a larger and better 

 flavored berry, and keeps longer. The vine 

 is hardy and vigorous. The Vergennes is as 

 hardy as Rogers' No. 4, very vigorous and 

 produces regular crops of splendid frnit, 

 which keeps until spring in perfect condition, 

 packed in sawdust. The Moore's Diamond 

 is a heavy cropper and is a most beautiful 

 white grape It is a little earlier than Con- 

 cord, as strong in its habit of growth and as 

 hardy. I have had no mildew, not even on 

 my Brighton, for several years since I com- 

 menced washing my vines in the spring with 

 a solution of sulphate of iron before the t'rowth 

 starts, giving tl em also a perfict cultivation 

 and proper pruning. 



W. Warnock, Ooiloicli. 



Heating Small Conservatories. 



Sir, — I notice in the Way iotne of the HoR- 

 Tici'i.TrRisT, page ITS, a rather captious cri 

 ticism upon my answer to a ijuestion regarding 

 the heating of a conservatory, in the March 

 number. 



I state that a ceitain amount of pipe will 

 answer, if the temperature does not full below 

 twenty-five degrees. The critic considers the 

 answer unsatisfactory, as the temperature 

 often falls fifty degrees below. While I did 

 not state it in as n any words, I certainly in- 

 tended to fix the limit at twenty-five degrees 

 heloiv zero, and should have giuie to the trou- 

 ble to have so stated, had 1 supposed that 

 your readers w ould not underfctand it that 

 way. There are none of our northern States 

 where the temperature does rot occasi( nally 

 reach zero, aid here, in central Michigan, 

 t« enty-five /ic/oir zero is not unconnnon ; so 

 that I should hardly think cf placing twenty- 

 five ahoiv zero as a minimum tcmpcratuie for 

 a p int in Canada. 



So far as the amount of pipe recommended 

 is concerned, I find no criticism of that, and 



after further consideration, I see no reason 

 for changing the figures given. 



Criticism No. 2, related to the fire surface 

 recommended, which was four runs of two- 

 inch pipe the length of the fire-pot. Mr. 

 Critic claims that one would be ample. It is 

 customary in estimating the fire surface le- 

 (|uircd in a heater, to take one-eighth of the 

 radiating surface to be supplied, and I fol- 

 lowed that rule. While a smaller amount 

 might answer, in the present case where, in 

 a hot-air furnace the economy of fuel con- 

 sumption need not be considered in determin- 

 ing the size of the heating coil for the conser- 

 vatory, I should by all means prefer to have 

 four pipes, rather than one in the coil, if on a 

 winter morning I were to find the fire nearly 

 out and the temperature twenty-five degrees 

 below zero o.itside ; and as this is likely to 

 happen in the case under consideration, I 

 _ should use four pipes rather than a smaller 

 number. 



The third critici^m was also uncalled for, as 

 I do not differ fiom Mr. Captious Critic as to 

 the reason for the circulation of the water, 

 and always like to carry the pipes well above 

 the heater. I could have answered the ques- 

 tion by saying " No," but it seemed to me 

 that Mr. German was afraid that he would 

 have trouble with the circulation, owing to 

 the heater being in the basement of the dwell- 

 ing and a number of feet from the ciiiserva- 

 tory ; and I tried to assure him that he need 

 have no fear, "as the entire length of the 

 circulation will not be moie than fifty or 

 sixty feet." I beg to differ from Mr C C, 

 as I think " the working of pipes iloeft depend 

 on their length," as can leadily be ascertained 

 by comparing the circulation of a long run of 

 small pipe with a short run, when both are 

 but slightly above the level of the heater. 

 While Mr. Girman did not tell the height of 

 the radiating pipes above the heater, I in- 

 ferred that it must be at least six to e'ght 

 feet from the lowest part of the returns to 

 the highest point in the circulation, as the 

 heater was in the cellar of the residence, 

 while the conservatory was built against it. 



I noticed several questionable statements 

 in the interesting dissertatii n of ytjur corres- 

 pondent, but will only cnmmtnt on one of 

 them, which is so utterly opposed to the best 

 piactice of the present time, that it may lead 

 to serious mistakes. In paragraph (S) he 

 recommends 20 gallons of water for heating 

 1000 cubic feet (which would be all light for 

 a certain size of pipe and for a house of a 

 certain shape), instead of reconimendiiig a 

 certain ratio between the radiating surface 

 of the coils and the exposed glass sniface, as 

 is the usual method. The error can be seen 

 when we consider that a four-inch pipe offers 

 only about four times as much heating sur- 

 face as a one-inch pipe, while it contains six- 

 teen times as much water. If the rule of Mr. 

 C. C. is correct, a linear foot cf four-inch I'ipe 



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