a 
ree 
J. Schiel on Classification by Series. 51 
€,H, © benzoylic alcohol, — a pers 
WH, cinnamylic ei 250°. 
the difference in composition is here 26H, the difference in boiling 
point, 46°; to the difference €H in composition there corresponds 
therefore a difference in the boiling points of 23°, and as to the 
difference €H, we mostly find a difference of 19°—20° in boiling 
aged gt influence of the atom of H on the boiling point : in 
this In a similar manner the influence of € on the 
boiling toa? may be shown to be 26°, as benzoylic alcohol iad 
cinnamylic alcohol differ by €+€H, and €H, answers to 20°, 
we have 46°—20°=26°. The frifitiesce of the single elements 
on abe boiling Soa may thus be found by seriation and general 
laws deduced comparing the different results obtained b 
this method. * he acids form quite a number of generic series, 
Series of Acids I. 
€nHonO2 fatiy acids n=1 to n=380. 
€nH2n03 glycolic acid n=2. 
CrnHnOs glyceric acid n= (isomeric with lactic acid.) 
The acids of this generic series corteepond to the first aleo- 
holic series 
Series of Acids IL. 
CaHon-20s 
The special boeadlogotl series defying from this generic series are, 
€3H42 acrylic acid. €2H2 03 glyoxylie acid. 
€4Hg@2 crotonic “ €3H,@4 pyroracemic acid. 
€5HsOQ2 angelic “ : 
etc. etc. — 
€2H2O4 oxalic acid. €3H40s tartronie acid. 
€3H404 malonic “  €4H605 malic “ 
€4H6O4 succinic “ : 
€sHgQ, lipic  —* a 
etc. ete. 
€4H6Q¢ tartaric acid. €sHis mucic acid. 
Series of Acids IIT. 
€,,H2n-402 
€,Hen-4O3 
€nHen-404 
€nH20-40s 
