732 Wisconsin Academy of Sciences, Arts, and Letters. 
Cone Oils 
Western yellow pine ( Pinus ponderosa Laws.) 
Sugar pine ( Pinus lambertiana Dougl.) 
Longleaf pine ( Pinus palustris Mill.) 
Oleoresins 
Western yellow pine ( Pinus ponder osa Laws.) 
Western yellow pine ( Pinus ponderosa scopulorum Engelm.) 
Sugar pine ( Pinus lambertiana Dougl.) 
Lodgepole pine ( Pinus contorta Loud.) 
Digger pine ( Pinus sabiniana Dougl.) 
Pinon pine ( Pinus edulis Engelm). 
Sand pine ( Pinus clausa Sarg.) 
Singleleaf pine ( Pinus monophylla Torr. and Frem.) 
Jeffrey pine ( Pinus Jejfreyi). 
Bark Oils 
Incense cedar ( Libocedrus decurrens Torr.) 
White fir ( Abies concolor Parry.) 
Wood Oils 
Port Orford cedar (Chamaecyparis lawsoniana Parlatore.) 
Examination of Woods 
Woods from four conifers and three hardwoods were analyzed 
the species being: 
White spruce (Picea canadensis B. S. P.) 
Douglas fir ( Pseudotsuga taxifolia Britton.) 
Longleaf pine ( Pinus palustris Mill.) 
Western larch ( Larix Occidentalis Nutt.) 
Sugar maple ( Acer saccharum Marsh.) 
Yellow birch (Betula lutea Michx.) 
Basswood ( Tilia americana Linn.) 
The three hardwoods are added for comparison with the coni¬ 
fers. 
The analysis of each wood covered the following determina¬ 
tions: (1) moisture; (2) ash; (3) ether extract; (4) cold water 
extract; (5) hot water extract; (6) solubility in alkali; (7) pen- 
