200 H. G. SMITH. 
The full analysis may be stated as follows, for 100 ce. of the 
sap, from which the percentage composition can be readily calcu- 
lated. 
‘Phosphates of Fe, Mg and Al. ... = ‘0113 gram. 
Magnesia (MgO) = ‘ine eis ae SIO ge 
2 by difference : ah dee, oe OOET. gs 
Chloride of Potassium (KCl) ee is, me (1048 
Chloride of Sodium (NaCl) ... amet UTEIL os 
Chloride of Calcium (CaCl,) . co mee EIT S ss 
‘SO, = 0036 equal to ? (Na, SO ay ch ee OUOE 
Butyric Acid (by distillation)... = "1232. <4, 
Organic substances, organic acids, etc. = "1842 ,, 
Nitrogen és Ses! Ee sak trace _,; 
Water ... i a pee hl 99-6082 
100-3600 
The amount of chlorine in the soluble portion was found by 
titration to be -167 gram. The results of the analysis give the 
chlorine with the potassium as ‘0499 gram., with the sodium as 
0431 gram.; while the amount of calcium found requires ‘075 
gram. to rin the chloride, or almost the identical amount left from 
the alkalis. The theoretical quantity of soda has been added ee 
the SO, found, although it is not certain that it is present with — 
that base, so a query has been placed before it. The presence of 
phosphoric acid is well marked, also the iron, good reactions being 
readily obtained for both forms. Nitrogen is present, but only 
as a trace. 
Fehling’s solution shows that the sap has slight reducing pro 
perties. The absence of lithia etc. was proved by spectroscopic 
investigation. 
In drawing conateiions from the results of this investigation of 
the inorganic constituents, it appears evident that the calcium in ‘ 
this sap was present as chloride, or in its most soluble form, and 
not as generally supposed as a sulphate or as a phosphate, because, 
not a trace of lime was found in the insoluble portion of the — 
ignited residue. Also that the alkalis were present as chlorides. aoe. 
