HYBRID ROSES, OLD AND NEW. 153 



strongest, such as that splendid variet}' Mrae. Gabriel Luizet, and 

 others of a like character. The last of July and August is the 

 time to be on the watch for it, when cool nights follow warm da^-s. 

 You must then be ready the next morning with your sulphur 

 bellows, for the enemy will surely be there ! If all affected leaves 

 could be gathered and burned, (which would be quite possible in 

 a small collection) the chances of transmitting the disease would 

 be greatl}' lessened. 



Orange Rust or Fungus, is the reverse in its action of mildew, 

 coming from the inside of the leaves and stem. Mr. G. Baker 

 says, " Orange Fungus chiefly attacks the lower leaves of the 

 smooth-wooded class of rose plants, such as Victor Verdier, 

 Countess of Oxford, Hippoh'te Jamain, and the like, while it is 

 worthy of remark that Mme. Clemence Joigneaux, William 

 Warden, Edouard Morren, and those of the same character of 

 foliage etc., are seldom subject to these forms of fungoid disease." 

 Cutting off the affected branches and burning them is the best 

 remedy ; cut freely, as is done for the fire blight on the pear, but 

 be careful to prevent the rusty powder on the under side of the 

 leaf from being scattered to disseminate the disease, and keep the 

 decaying leaves raked up and burned. 



Black spot on rose leaves is another form of fungus, caused 

 undoubtedly by atmospheric changes ; I know of no remedy 

 except to pick off the leaves and burn them. It attacks them in 

 the greenhouse when the thermometer falls at night, and soon 

 affects the health of the plant, but can there be avoided by a care- 

 ful control of the temperature, and prudence in the use of water. 



In conclusion, my advice to a beginner in rose culture is to 

 plant a few kinds at the start, thoroughl}'^ acquaint himself with 

 their character, and gradually plant more ; practical experience 

 is the best guide. 



Discussion. 



Mr. Spooner illustrated his paper with enlarged diagrams of the 

 injurious fungi spoken of, and also with specimens of flowers and 

 plants ; among the last the Mauetti and De la Grifferaie stocks. 

 In the course of his reading he remarked that onl}' one bloom of 

 Mile. Marguerite Dombrain has been shown for twelve years. A 

 flower of Jules Margottiu was shown by the essayist with the re- 

 mark that it is probably the parent of more good varieties than 



