Oak, i. 68.
Ochre, i. 62, 63.
[OE]conomy of the Torneans, ii. 173-182.
_[OE]strus nasalis_, ii. 45.
---- _Tarandi_, i. 293. ii. 2, 23.
_Oniscus aquaticus_, i. 206.
_Ophrys alpina_, ii. 279.
---- _cordata_, ii. 109.
Orchis, palmated, i. 178.
Ore, silver, i. 246.
_Orobus vernus_, ii. 228.
Ortolans, i. 71.
Owls, i. 93, 204.
Owl, eagle, i. 39, 41, 210.
_Oxalis Acetosella_, i. 11, 58, 68.