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Heating a Small Conservatopy. 



1097. Sir, — I am desirous of putting up 

 a small green house about 8 x 10 feet. Not 

 being in a position to put in a hot water heat- 

 er, can you or any of your readers tell me how 

 best to heat it to say 50° when the cold out- 

 side is 20° to 25° below zero. Any pointers 

 gratefully accepted. 



In Troublk. 



Ottawa. 



To heat a small conservatory like that 

 described, a large oil stove would 

 answer in ordinary weather, but when 

 the mercury drops below zero two 

 would be required. If the stoves are 

 well made and properly cared for there 

 will be little trouble from smoke, but it 

 would be safest to provide a small pipe 

 to carry off the gases to the outside of 

 the house. It will be much m(jre satis- 

 factory if a hot water system could be 

 used, and the oil stoves could be used 

 (or supplying the heat while a galvanized 

 iron tank with a capacity of five gallons 

 could be used as a heater. A coil of 

 one-inch pipe containing as many linear 

 feet as there are square feet of exposed 

 glass, plus one-fifth of the woodwork, 

 would distribute the heat around the 

 walls of the conservatory. 



L. R. Taft, Agri. Coll., Mich. 



Raspberries Affected With Rose 

 Scale. 



109S. Sin, — I send you samples of dis- 

 eased raspberry canes, can you explain, and 

 give remedy. 



A Subscriber. 



Reply by Dr. Fletcher, Ottawa. 



On the ist inst., I received from you 

 a card together with some samples of a 

 scale insect on the raspberry. These 

 have been examined and prove to be 

 the Rose Scale {Diaspis rosae). The 

 scale resembles the Scurfy Bark Louse 

 somewhat in appearance, but is rather 



arger, nearly circular and is pure white 

 in colour, forming a striking contrast to 

 the green or reddish shoots of the plant 

 upon which it occurs. It sometimes 

 appears in large numbers and thus is 

 easily observed. It is by no means a 

 common insect in Canada but occasion- 

 ally occurs on blackberries and raspber- 

 ries, and rather more frequently on 

 roses, particularly on such bushes as 

 have not free ventilation or are fastened 

 to walls or trellises. As a remedy for 

 this insect Dr. J. B. Smith recommends 

 whale oil soap, one pound dissolved in 

 four gallons of water ; to this add one 

 ounce of carbolic acid and spray the 

 bushes thoroughly. Badly infested 

 bushes should be cut back severely in 

 autumn and the cuttings burnt and all 

 the canes left for crop treated a second 

 time in spring before the leaves burst, if 

 there is any sign of life in the scales. 



Worms in Garden Soil. 



1099. Sir, — I send you to-day a 

 small box containing worms, such as have 

 been infesting my garden for the last two 

 years. In fact they have become so trouble- 

 some that I have been unable to grow, with 

 any sort of satisfaction, sweet peas, edible 

 peas, corn and many other crops. These 

 worms cluster about the seed as soon as it 

 starts to germinate, and attack it, causing it 

 to soon rot, and of course the crop is de- 

 stroyed. If you, or any of your subscribers, 

 can suggest any means of getting rid of the 

 pest, I should feel very thankful. 



Last summer was the first time my gardeu 

 was troubled with these worms. They are 

 much more numerous this season, in fact my 

 kitchen garden is almost ruined by them. I 

 will be glad to hear from you at your earliest 

 convenience. 



T, H. Parker. 



The creatures sent with your letter 

 from Mr. Parker of Woodstock are 

 Julidae or millipedes. These are occa- 

 sionally complained of in gardens. A 

 light application of nitrate of soda is 



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