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Birch tar oil

Birch tar oil

pyroligneous oil obtained by the dry distillation of the wood of betula alba and rectified by steam distillation; used externally in the treatment of skin diseases.

Synonym: birch tar.


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Brain size=IQ level theory (Blacks vs Whites & Asians)

... view of disease in man. Proceedings of the Royal Society of London, B220, 273-298. Seligman, D. (1989). A question of intelligence. New York, NY: Birch Lane. Snyderman, M. & Herrnstein, R. J. (1983). Intelligence tests and the immigration act of 1924. American Psychologist, 38, 986-995. Sorokin, ...

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by TJJ
Fri May 16, 2008 12:14 am
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 72
Views: 270260

"Twenty questions"-biology game

Betula allegheniensis Betula cordifolia Betula glandulosa Betula lenta Betula lenta subsp. uber - Virginia Round-Leaf Birch Betula michauxii Betula nana Betula neoalaskana Betula nigra Betula occidentalis Betula papyrifera Betula populifolia Betula pumila

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by Amrik
Sat Nov 11, 2006 1:17 pm
 
Forum: General Discussion
Topic: "Twenty questions"-biology game
Replies: 771
Views: 346540

"Twenty questions"-biology game

Birch Family = Betulaceae? if yes then which Genus? Betula? if yes where is it found? North ... the woods It has catkins (third time I mentioned) Betula So what species? Aromatic wood, oil used topicaly for pain relief. And was used to flaver gum and mints.

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by Linn
Fri Nov 10, 2006 4:47 pm
 
Forum: General Discussion
Topic: "Twenty questions"-biology game
Replies: 771
Views: 346540

"Twenty questions"-biology game

Birch Family = Betulaceae? if yes then which Genus? Betula? if yes where is it found? North America? Europe? Asia?

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by Amrik
Fri Nov 10, 2006 12:59 pm
 
Forum: General Discussion
Topic: "Twenty questions"-biology game
Replies: 771
Views: 346540

"Twenty questions"-biology game

... and you didn't anser it yet. Now please answer for a further clue for me :P Oh :) I thought you would get it with my other clues. its the birch family

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by Linn
Fri Nov 10, 2006 3:21 am
 
Forum: General Discussion
Topic: "Twenty questions"-biology game
Replies: 771
Views: 346540
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