FLORA OF McNAB's ISLAND, HALIFAX, X. S. BAKBOUR. 563 



Part III. — Xarcotisatiox of Plants. 

 This part of my paper consists of a few experiine'iits made 

 on wet days when outdoor work could not be well done. The 

 plants used were mostly common ones found on the island, and 

 chloroform was the narcotic used. In many cases several exper- 

 iments were done with the same kind of plant. I do not claim 

 that the results g'ained are as accurate as they might l)e, l)ut 

 looking over some works on physiology of plants, I can sav this, 

 that certainly some of them are borne out as correct to a great 

 extent; and remember, I was in camp with only rough contriv- 

 ances to work with. I am satisfied myself with my results, but 

 in any case I hope it may prove interesting to vou to hear them. 

 I take the flowers used in no special order ; will say what I did, 

 briefly, and sum up results afterwards. 



Moneses unifiora. — Specimens dry. Placed in lethal cham- 

 ber entirely; that is, with only the air in the chamber. Xarcotic 

 given. Flowers changed in colour to light brown in two min- 

 utes ; corolla, brown ; anthers, untouched ; carpels blackish, 

 styles and stigma untouched. la half an hour all parts of flower 

 dark brown. 



Trientalis americana. — Specimens dry. Placed in chamber 

 as in former case exactly. Little change in half an hour; 

 flowers just a little flaccid. 



Oxalis acetosella. — Specimen dry, and put into chamber as 

 in previous specimens. Almost at (.mce the leaves fell down and 

 drooped; the petals of the flower curled back, instead of in, as 

 in sleep, in ten miinites. The flower became limp, but colour 

 remained unchanged. The leaves later opefned again, but 

 remained flaccid. Compare these results with normal sleep. 



Specimens moistened with water and placed in the chamber. 

 Effects less, leaves affected the most. Flowers became limp, but 

 colour unchanged in ten minutes. 



Moss. — Quite unaffected in ten mi'nutes, or half an hour. 



