LECT. IV.] THE ROOT. BULBS. 175 



appended to the present year's bulb *. On taking 

 off the scales of the bulb, the manner in which 

 the runner, which bears the new bulb, is sent off, 

 becomes extremely apparent -f- ; and the connexion 

 between it and the stem and caudex of the adult 

 bulb is rendered still more obvious, by inverting 

 the cut end of the stem in a coloured solution, 

 and making a longitudinal section of the whole ; 

 for, as the vessels in this species of Lily are com- 

 paratively large, they can be readily traced, by 

 the naked eye, when filled with the colouring 

 matter, passing from the stem into the caudex, 

 thence into the runner, and through it to the small 

 scales forming on its apex J. 



* Plate 2. fig. 4-. The bulb of the superb Lily, with a 

 small portion of the stem of the plant, a. The bulb of the 

 present year ; b. last year's bulb in a decaying state, with c. 

 the remains of the bulb of the prior year still attached to it : 



d. the rudiments of the new bulb attached to the extremity of 

 the succulent runner, shooting forward between the scales; 



e. the roots of the bulb ; f. roots given off from the stem above 

 the bulb. 



f Fig. 5. a. The caudex of the bulb denuded of its scales. 

 b. the runner projected from it, and bearing the rudiments of 

 the young bulb on its extremity ; c. d. the remains of former 

 years' bulbs ; e. the cut stem of the vegetating plant ; f. the 

 roots of the adult bulb. 



J Fig. 6. a longitudinal section of the caudex and lateral 

 runner of fig. 5. injected by placing the cut end of the stem 

 in a solution of extract of Logwood : a. the caudex, the coloured 

 spots in which show where the bundles of vessels passed off to 



