jar standing in water. In all the pieces roots came out all along 

 the length and shoots all along the length. Xo difference was 

 observed between the upper and the lower end of any stick 

 whether it was inverted or not. With approximately equal con- 

 ditions of air and moisture all along the sticks, the roots and 

 shoots came out everywhere alike. They did not, however, come 

 out from ever}' part of the surface but from irregularly scattered 

 spots widely distributed along the entire length and with no ob- 

 served polar distribution. In a specific case of a twig cut into 

 four pieces and suspended so that the original basal piece had its 

 apex above, the next piece its apex below, the third its apex 

 above, the fourth its apex below ; it was found that when the four 

 pieces were placed together again in their original sequence they 

 formed a long stick that bristled with short roots and with leaves 

 along its entire length. 



In these experiments in moist air, a callous tended to form over 

 the cut surfaces, but no new growths were made from the cut 

 surfaces nor from near the cut surfaces. 



The roots came out from unseen lateral beginnings, while some 

 of the leaf-bearing shoots came from visible buds and others from 

 unseen beginnings. 



In most cases the roots came out in groups of several close 

 together and almost always in a row one above the other like 

 fingers of a hand. While the roots could be seen for some days 

 pushing out the 'green bark as conspicuous elevations before they 

 broke through, there were many more elevations due to the 

 swelling and bursting of lenticels. These changed a few hours 

 after being put into water, or moist air, and finally exposed wax- 

 like masses that made the surface of the twig thickly scattered 

 over with white areas. 



It would seem that these twigs of weeping willow contained 

 very large numbers of lateral beginnings of shoots and of roots 

 all along their lengths, or else have the power to form such be- 

 ginnings, or else have both formed and facultative shoots and 

 roots. When both water and air were present, large numbers of 

 such organs grew forth all along cut-off twigs without observed 

 reference to what was apical or basal. When, however, water 



