Schorger—Chemistry of American Conifers. 731 
Wood Oils 
Red juniper (Juniperus virginiana L.) 1 
Longleaf pine (Finns palustris Mill.) 2 
Western yellow pine (Finns ponderosa Laws.) 3 
Singleleaf pine (Finns monophylla Torr.) 3 
Jeffrey pine (Finns Jeffreyi ). 3 
Examination of Woods 
The literature on the analysis of American woods is very 
meager. Usually only one or two determinations were made on 
each species. De Chalmot 4 determined the yields of furfural 
from a large number of woods, and Dean and Tower 5 give the 
cellulose content of a few species. 
Scope of Present Work 
The present investigation covers the examination of 25 oils 
and oleoresins, and seven species of wood. Only three of these 
oils had been previously examined by other investigators, the 
remaining 22 being new to chemical literature. The following 
tables give the products analyzed: 
Needle Oils 
Longleaf pine (Finns palustris Mill.) 
Cuban pine (Finns heterophylla Sud.) 
Western yellow pine (Finns ponderosa Laws.) 
Sugar pine (Finns lambertiana Dougl.) 
Digger pine (Finns sabiniana Dougl.) 
Lodgepole pine (Finns contort a Loud.) 
Red fir (Abies magnifica Murr.) 
White fir (Abies concolor Parry.) 
Douglas fir (Pseudotsuga taxifolia Britton.) 
Incense cedar (Libocedrns decurrens Torr.) ‘ 
1 Waiter, Ann. Chim. Fhys. 1 (1841) 501; 8 (1843) 354; Chapmann and 
Burgess, Proc, Chem. Soc. 168 (1896) 140; Semmler and Hoffmann, Ber. 40 
(1907) 3521. 
2 Teeple, Jour. Am. Chem. Soc. 30 (1908) 412; Kremers, Pharm. Rev. 22 
(1904) 150; Schimmel and Co., Ber. April (1910) 109; Toch, Jour. Ind. 
Eng. Chem. 6 (1914) 720. 
8 Adams, Jour. Ind. Eng. Chem. 7 (1915) 957. 
4 Am. Chem. J. 16 (1894) 224, 589. 
5 Jour. Am. Chem. Soc. 29 (1907) 1119. 
