'Scc.T. XIV 



DISEASES OF PLANTS. 



3^S 



SECT. 



XIV. 



DISEASES OF PLANTS. 



^y 



I. 



feafes from internal caufes 



I 



Difea/ed irritahility. Irritability derived fi 



Exhaufted by too great ft imulus 

 Much water after a hot day injurious 



oxygen 



Experiment on euphorh 



Shade apricot flowers from thejun. 



r it ability accumulated by lefs ft imulus. 



Taken to 



Habits of plants brouglot from the f oath 



A 



bleedingfeaft 



houfes. Habits of plants 



In 



gi'-eater after being expofed to much cold, lefs after much 



the morning. Hybernating 



'/*/% /l 



Variation of heat contributes 



Eryfif he mildew. A feftile fungus . Give light and 



w 



Sow early. 



big 



-got 



Buhamel. 5. Uftilago,f 

 to want of impregnation. 



from old graft 



? rob ably another fungus. Uredofi 

 , which it renders unwholefome. 

 lut . Jfcribed to infers by Linneu 

 How prevented. 6. Gangrena, canker. Affe^s apph 



Great eft ii 

 to health 



Drain the land, 



umenti. Blight. 



'Ifcribed to infe5is by 



Is probably owing 



'- 



From wounds. Bind living bark en the wound. Or paint 



? SuC'^' 



alburnum. 7. Suffufio mellita, honey -de 



If occaftoned by the 



ceeded by a black pozvde 



Exfudatio miliarisy miliary f 



houfes from too great heat in confined 

 wounds infpring, and after midfumn 

 10. Secretio gummofa, gmn fecretion 



Q. Fluxus timbilicaliSifap-fti 



On vines in hot- 



w. From 



Bind onfp 

 Bind on le 



Apply folut ion of g 

 nal elements, i. 

 Joms from thefunfu 



Bind on a new bark 



: Strangulate with zvire 



Sponge, Indian rubber 



II. Difeafes from exter 



Draught and moifti 



Eight) 



Heat and cold, 



bloft 



and wheat fields. By de 



ftroying their irritability, like theftimulus offome pifons. By burfting their vejfel 



How to prevent 



Ight 



off 



5, Of acid 



Jand. 6. 

 arfenicy muriatic acid, 

 md effeEi on vegetables 



Noxious exhalations y from lead-zvorksy and 



Offterile 

 7. Poifons of 



8. Condiments 



Alcohol 



Opium ^ 



Sea -fait 



the worm of fmep. ^.'External i^ym 



S s 2 



Its life 



I 



Wound 

 grape- 



