248 Gardening Under Glass 



currents sweeping through nicely progressing 

 new growth, are the principal causes of disease 

 and of damage by insects. Too high a tempera- 

 ture coupled with excessive atmospheric mois- 

 ture during winter causes soft, sappy growth, 

 and this is least able to resist the onset of fungoid 

 and insect foes likely to molest plant life under 

 faulty treatment. Sulphur, blown through the 

 foliage, is a remedy for mildew and leaf -spot; 

 nicotine or tobacco, in the form of liquid sprays 

 or by fumigation, keeps thrips and green fly 

 away; scale insects yield to soap-suds and red 

 spider is held in check by hard syringing. Little, 

 however, need be feared from disorders of any 

 description if in the treatment of plants alertness, 

 care, and caution are exercised. Proper atten- 

 tion to cultural details wins out against all diffi- 

 culties in the end. 



