NOTES AND NEWS. 
THE BELIEF that the nucleolus is not a permanent cell organ has 
been further confirmed b the observations of F. Rosen (Bot. Cen- 
Asi 65: 115) in his studies of the root tips of Pisum, Phaseolus and 
ea. 
THE METHOD by which underground shoots gradually sink in the 
soil is said by A. Rimbach (Ber. Deutsch. Bot. Gesell. 13: 141) to be 
due to the power of forming contractile roots, especially when they 
are young. 
IN His stuDy of the “oil tubes” of Umbellifere C. Van Wisselingh 
(Arch. Néerl. Sci. Ex. et Nat. 29: 199) concludes that the characteris- 
tic substance of the walls is neither suberin nor cutin, but an allied 
substance which he names “vittin.” 
_, DARWIN’s explanation of the nyctitropic position of leaves, that it 
8S a protection against nocturnal radiation, has been controverted by 
: Stahl (Ber. Deutsch. Bot. Gesell. 13: 182), who sees in the position 
4 device to promote transpiration in the night and early morning 
HOGENIC YEastT has recently been studied by Dr. H. Tokishige 
i 6 a 19: 105). It is the cause of an 
Hectious skin disease of horses in Japan. In artificial cultures it pro- 
NCES Spores, and is named by the author, Saccharomyces farciminosus. 
ae Joun K. Smart has described (Bull. Torr. Bot. Club, Jan.) two 
To Senera of Saxifragacez. Jepsonia is based upon Saxifraga Parryt 
or. and includes also S. malvacfolia Greene; and Saxifragopsis is 
4sed upon Saxifraga 2 oides Greene. Both genera are illus- 
trated. ga fragarioide i 
Id by that institution to form a nucleus for the Redfield fund of 
Annee, '0 be used for the benefit of the botanical section of the 
cademy, 
Iv Is oF INTE i he old category 
“ REST to note that the protest against the Lich Sie 
c Parallel-veineq” leaves is ermine L. Gabelli Sich 9 Lae 9: 356) 
instante’ referred are but 
stances d out that the greater number of cases so 
the leaf °* Palmate venation modified by the ribbon-like form of 
wait SNTHER of Loranthacex has been investigated by Van pienhens 
Avance 42: 363) with some interesting rts ae 
20 indefinit.pollen-sacs” is remarkably variable, ranging oe Ag 
: re number. It would be of interest to know whet eee 
ary tage to the microsporangia, or to the “pollen-sacs’ 0 
Tur a AT f ch curious 
.ATENT LIFE” of th. d has been a matter of mu ; 
culation, G. De a a ae to the conclusion (Arch. Sct. 
[181] 
4~Vol, XXI. —No. 3. 
