Vegetable Statich. 



f & 



39 





* * 



" to which Succeeded a moderate warmth. 

 " Frozen concave clouds therefore, by their 

 c< great reflections, produce a vigorous heat, 

 and the fame when rclblved cxcciTivc 



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U 



COld. 





i 



t 



li 



* 





I 







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Whence we fee that blafts may be occa- 

 fioncd by the reflections of the clouds, as 

 well as by the above mentioned refraclion 

 of denfc tranfparent vapors. 



July 21. I obferved that at that fcafon 

 the top of the Sunflower being tender, and 

 the flower near beginning to blow , that if 

 the Sun rife clear the flower faces towards 

 the Eaft, and the Sun continuing to mine, 

 at noon, it faces to the South, and at 6 in 

 the evening to the Weft: And this not 

 by turning round with the Sun, but by nu* 

 tation; the caufe of which is, that the fide 

 of the ftem next the Sun perfpiring moft, it 

 fhrinks, and this plant perfpircs much. 



I have obferved the fame in the tops of 

 Jerufalem - artichokes and of garden-beans 

 in very hot Sun-fhine. 



Experiment X. 



July 27. I fixed an Apple -branch m\ 3 



D 4- feet 



