1917] HARRIS & LAWRENCE—TISSUE FLUIDS 293 
MIE Tlie Tigo tis rok ge an A=1.76, P=21.2 
March 26, A=1.77, P=21.3 
March 26, A=1.76, P=21.1 
aT se ae 1.84, P=22.1 
i 1.68, P=20.2 
Philibertella oa: (Jaca, Ves ANE ee oe January 27, A=1.51, P=18.2 
Evosopss juliflora (L.) D.C... . 5 osc, January 27, A=2.69, P=32.3 
Sarcomphalus S vince (L.) (Sarcomphalus laurinus Griseb.) 
January 27, A=1.63, P=19.6 
Schoepfia chrysophylloides (Rich.) Planch................. A=2.79, P=33.5 
uary 27, A= , P=30.2 
January 30, A=2.66, P=32.0 
March 26, A=2.93, P=35.1 
il 2, A=3.06, P=36.7 
pein bokamonse Lo a, A=1.98, P=23.8 
, A=2.09, P=25. We ‘ 
Tidbits oe Bi ee at re ee es A=1.75, P=21.0 
Apri 2, 
“Whee Geena th. 2 January 25, A=3.39, P=40.7 
Analysis of data 
In the analysis of these data the first step is to put on one side 
the two species with more or less succulent leaves, Bromelia Pinguin 
and Bryophyllum pinnatum, and the cacti. These show low con- 
centrations of about 6-9 atmospheres. They are not at all com- 
parable with the other forms investigated in these deserts and 
elsewhere and will be discussed separately on a subsequent 
page. 
Of the thin-leaved forms, Jatropha gossypifolia has a thickened, 
almost succulent stem. It is a form much more characteristic of 
the coastal flats than of the rocky hillsides. The rather tender 
leaves yield a sap of lower concentration than that of any other thin- 
leaved species. 
