Lg ee ee ee eee ee ee eS ee TTR eS Oe ES eR eT Se ee eS eee Ae ee Fey se eee 
. , 4 ne oye 
124 MISSOURI BOTANICAL GARDEN. 
Numbers 1 to 30. Gathered and sap extracted from 11 
to 4 p.M., May 13, 1911: saps frozen 1 to 4 vp. m., May 15, 
1911. 
Numbers 31 to 50. Collected May 17, 1911, from 2 to 
4p.™M.: frozen 8 to 11 p. M., May 18, 1911. 
Numbers 51 to 70. Collected May 18, 1911, from 2 to 
4p.M.: frozen 7 to 11 p. m., May 19, 1911. 
Numbers 71 to 92. Collected May 19, 1911, from 2 to 
4 p.M.: frozen 9 to 12 a. m., May 21, 1911. 
Numbers 93 to 110. Collected May 20, 1911, from 2 to 
4p.M.: frozen 2 to 4 p. M., May 28, 1911. 
The saps, with their freezing point lowering in degrees 
centigrade, are given in the order of their collection. Num- 
bers from 1 to 10 are with thermo-couple number 1, in 
which one millimeter of deflection equals 0.2861°C., and 
numbers 11 to 110 are with couple number 2, in which 
one millimeter of deflection equals 0.29°C., calibrated with 
the sugar solutions of 10, 20, 30, and 40 grams to 100cc. 
of water, taking Raoult’s lowering for each as respectively 
0.58°, 1.16°, 1.74°, and 2.32° centigrade. 
Degrees Centigrade 
ee eR er ree ay re ee 1.771 
2. Hydrangea paniculata grandiflora........... 1.322 
D: Magra. Slee nck ines bee 1 ee 0.7792 
4. Magnolid cordata .....iscccecsisccsereneus 1.2985 
5. Magnolia stellata... ..ricsccsioss opp cas 1,2513 
G, Magmolin QIanan 2.2.06 ccsevvccsecccsseses 0.8972 
7. Magnolia acuminata ..............ccceeces 0.8736 
S. Mogmelin Kobras .... 2. ode nieces oct pee nee 1.1569 
9. Magnolia Soulangeana ..................055 1.2513 
10. Magnolia obovata (M. purpurea)........... 0.9444 
2 ee anaes een Se 0.87 
Ey °c PAGE WOME i fn kk cc sides ees bps be benee con 0.625 
13. Berberis vulgaris Thunbergii................ 1.45 
14. Crataegus prunifolius (no sap). 
Bis, SACI ov occ ccc ccs e chi necs¥eress 1.363 
ee Tee er eee eres re 1.16 
UT. ,REIDEOGON WPTEROUE oe keene ces ccovemons 1.102 
Me es ee rr ee 1.943 
