126 Effects of Poisons on Living Vegetables. 



of the extract of belladonna and cicuta, (German manufactory,) 

 was introduced into the bark and pith of different stems of the 

 stramonium, at 12, meridian. 



2. Extract of belladonna introduced into the stem of the palma 

 christi. 



3. Powdered white oxyd of arsenic was freely spread about 

 the root of a young palma christi, and the plant watered. 



4. Arsenic introduced into the stalks of two young tobacco 

 plants, near the roots. 



5. Two young stramonium plants were selected : arsenic was 

 introduced into the stalks and stems of one, and spread about the 

 root of the other, and the plant watered. 



6. Dilute hydrocyanic acid introduced into an incision made 

 into the stalk of a stramonium. 



7. Dilute hydrocyanic acid poured on the root of impatiens 

 halsamina, (Lady-slipper.) 



8. Strong oil of tobacco introduced into the stalk of palma christi. 



9. Idem into the stalk of stramonium. 



10. Idem into the stalk of a young tobacco plant. 



11. Idem into a branch of ^cw5 canca. (Fig tree.) 



12. Idem placed freely round the root of a young pynis, (pear 

 tree,) the earth being loosened and watered. 



13. Idem placed round the root of palma christi. 



14. Idem introduced into the stalk of euphorbia sericea. 



15. Arsenic freely spread round the root of the mimosa sen- 

 sifira— exposed to the rain and dews. 



It is not necessary to enter more minutely into details of these 

 experiments, some of which were frequently repeated, with great 

 care. The same result universally followed in every instance. 

 Not one plant, shrub, or flower, displayed signs of the least in- 

 jury from the varied applications of the different poisons ; some, 

 indeed, appeared to thrive better, for the attentions which were 

 rendered them. 



I shall only add a list of plants, on which some of the experi- 

 ments were subsequently repeated at my request, by Mr. John 

 Carr, at Bartram's botanic garden. 



1. With extract of belladonna. — Zinea elegans, impatiens halsami- 

 na, vinea rosea, and kodruteria paniculata, 



2. With extract of cicuta. — Zinea elegans, tagites, vinea rosea, 

 and salvia splendens. 



