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Answer this without looking it up
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DoctorBeaver
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A stitch in time would have confused Einstein.
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Reply #40 on:
18/07/2007 15:21:49 »
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dentstudent
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Reply #41 on:
18/07/2007 15:53:15 »
During the course of a favourable spring, tree growth can begin early. This is represented as tree rings as you're aware. This period ends, and then new buds are set. If the year continues favourable, or there is a second period where growth can occur, the tree takes advantage of this and grows on from those set buds. Therefore, you get 2 annual rings in one year, instead of just one. This second period of growth is called Lammas growth, and usually begins in late July or early August. The name comes from (as far as I can tell) the Pagan festival you mentioned earlier which is on the 1st of August.
It's something you need to be aware of if you're practicing dendrochronology, or even if you're doing it properly!
http://images.google.co.uk/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Picea_sitchensis6.jpg/450px-Picea_sitchensis6.jpg&imgrefurl=http://commons.wikimedia.org/wiki/Image:Picea_sitchensis6.jpg&h=600&w=450&sz=74&hl=en&start=3&um=1&tbnid=z4jRmvM_HnLwXM:&tbnh=135&tbnw=101&prev=/images%3Fq%3Dlammas%2Bgrowth%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DN
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Last Edit: 18/07/2007 16:23:48 by dentstudent
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DoctorBeaver
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A stitch in time would have confused Einstein.
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Reply #42 on:
18/07/2007 19:39:42 »
Oooh! I didn't know they could do that.
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dentstudent
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Reply #43 on:
18/07/2007 20:26:27 »
They're as cunning as Cuttle the cunning cuttlefish on a stunningly cunning day...
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dentstudent
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Reply #44 on:
18/07/2007 20:27:30 »
Your go!
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DoctorBeaver
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A stitch in time would have confused Einstein.
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Reply #45 on:
18/07/2007 20:38:30 »
I shall have to think...
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