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* Not all species of wood floats in water. In order to sink in
water the specific gravity of the wood, has to be 1.00 or more.
The 27 below sink.
Kiln Dried 6% - 12% Moisture Content
African Blackwood - {Dalbergia melanoxylon} Average Specific
Gravity 1.18
Billian - {Eusideroxylon zwageri} Average Specific Gravity
1.17
Black Ironwood - {Olea laurifolia} Average Specific Gravity
1.08
Brazil Ironwood - Caesalpinia ferrea} Average Specific Gravity
1.18
Brazilwood - {Caesalpinia echinata} Average Specific Gravity
1.22
Burma Ironwood - {Xylia xylocarpa} Average Specific Gravity
1.26
Ceylon Ironwood - {Mesua ferrea} Average Specific Gravity
1.10
CocoBolo Rosewood - {Dalbergia retusa} Average Specific Gravity
1.11
Desert Ironwood - {Olneya tesota} Average Specific Gravity
1.13
East Indian Satinwood, Ceylon - {Chloroxylon swietenia} Average
Specific Gravity 1.02
Ebony - {Diospyrus crassiflora} Average Specific Gravity
1.03
Ekki - {Lophira alata} Average Specific Gravity 1.03
Greenheart - {Ocotea rodiaei} Average Specific Gravity 1.03
IPE - {Tabebuia serratifolia} Average Specific Gravity 1.09
Kingwood Rosewood - {Dalbergia cearensis} Average Specific
Gravity 1.18
Knobthorn - {Acacia nigrescens} Average Specific Gravity
1.17
Leadwood - {Krugiodendron ferreum} Average Specific Gravity
1.29
Lignum Vitae - {Guaiacum officinale} Average Specific Gravity
1.34
Macassar Ebony - {Diospyros celebica} Average Specific Gravity
1.07
Marblewood - {Diospyros marmorata} Average Specific Gravity
1.03
Mountain Mahogany - {Cercocarpus ledifolius} Average Specific
Gravity 1.11
Quebracho - {Schinopsis balansae} Average Specific Gravity
1.26
Satine, Bloodwood - {Brosimum paraense} Average Specific
Gravity 1.01
Snakewood - {Piratinera guianensis} Average Specific Gravity
1.37
Sucupira - {Bowdichia nitida} Average Specific Gravity 1.01
White Topped Box - {Eucalyptus quadrangulata} Average Specific
Gravity 1.01
Womara - {Swartzia leiocalycina} Average Specific Gravity
1.27
* Bamboo, although often tree like, is actually not a species
of tree.
* The whitest wood in the world is Holly {Ilex opaca}. The
Silver Striped Holly seems to produce the whitest wood of all
the species of Holly. To produce the whitest wood, the best
time to cut down Holly tress is in the winter when the sap is
lower, and then mill and kiln dry it before summer.
* The blackest wood in the world is Ebony {Diospyros
crassiflora}.
* Not all wood that comes from hardwood {flowering} broadleaf
trees is hard and wood that comes from softwood {conifers}
cone-bearing trees is soft. There are exceptions to this. For
instance Balsa {Ochroma pyramidale} and Basswood {Tilia
americana} are hardwoods even though they are extremely soft.
The southern pines {Pinus strobus} are softwoods but are
moderately hard and much harder than Balsa or Basswood.
* Osage Orange {Maclura pomifera} is the species of wood that
produces the most heat when burned, approximately 33 million
BTU's per 20% air dried moisture content cord. A cord of wood
is 4 foot wide x 4 foot high x 8 foot long {128 cubic foot} and
has on average 80 cubic foot of burnable wood, the rest is just
air space.
* The most recently discovered tree specie is the Wollemi Pine,
{Wollemia nobilis}. It was discovered in September 1994, by, a
New South Wales National Parks officer named David Noble in a
secluded area in the Blue Mountains of the Wollemi National
Park, approximately 124 miles west of Sydney Australia. The
total count of the wild mature trees is fewer than a hundred.
The largest one is a little over 131 foot tall and a little
short of 4 foot in diameter. The species is from the
Araucariaceae family of conifers which are around 200 million
years old, one of the oldest on earth.
In October of 2005, 292 five year old, 6 foot 6 inch to almost
10 foot tall cultivated Wollemi Pine trees from the Royal
Botanic Gardens in Sydney Australia, were auctioned off by
Sotheby's Auction House, selling from $2000 - $7000 each, with
one bidder paying $115,000 for a set of trees. The auction took
in $1.17 million.
Sometime in the spring of 2006, Wollemi Pine trees ranging in
height from 16 inches to a little under 5 foot will be
available to the general public at reasonable prices through
retail outlets.
* White Oak {Quercus alba} is the species of wood that is
easiest to steam bend. With thin stock {1/8 inch or thinner}
you can bend it, into an extremely small {tight} radius.
* The name Ironwood is actually a slang term given to the
hardest wood of an area, region or country. There are over 80
species of wood in the world, referred to or having the word
Ironwood in them.
* The heaviest and the hardest wood in the world is Snakewood
{Piratinera guianensis}. It's specific gravity averages
1.30.
* The tree with the world's greatest recorded root depth is a
Wild Fig {Ficus natalensis}, located at Echo Caves, close to
the town of Ohrigstad, Transvaal, located in South Africa. One
of its roots goes down 393 foot 8 3/8 inches.
* The Ombu {Phytolacca dioica} tree, looks like a tree but is
actually not a tree specie, it is a bush. It grows in
Argentina, Brazil and Uruguay. The Ombu can live with very
little water, can survive violent storms, insect attacks and
intense heat. Its wood is so moist it will not burn and so
spongy the tree can be cut down with a knife. Its trunk can
have a diameter of 16 foot and the total overall height can
reach 60 foot.
* Palm Sunday was named after the Palm tree {Phoenix
dactylifera} because people took branches of Palm trees with
them to greet Jesus Christ in Jerusalem {John 12:13}.
* The world's tallest natural uncut and living Christmas tree
is 276 foot. It is a Eucalyptus {Eucalyptus regnansis} located
in the Styx Valley, a tract of ancient forest in Tasmania,
Australia.
To date, the world's tallest cut down and decorated Christmas
tree was a Fir of 215 foot. It was used to celebrate the
Christmas of 1950 in the city of Seattle Washington.
* The world's shortest tree specie is the Dwarf {Least} Willow
{Salix herbacea}. It is rare to find one more than 2 1/2 inches
tall. They are also dioecious, producing both male, yellow
colored and female, red colored catkins. They have been found
growing on frozen tundra in the Arctic.
* The tree specie with the thickest bark is the Redwood
{Sequoia gigantean}, its bark can be up to 24 inches thick.
* The tree specie with the thickest bark other than a Redwood
{Sequoia gigantea}, is the Coast Douglas Fir tree {Pseudotsuga
menziesii}. On the older trees, the bark can be 8 - 12 inches
thick.
* The tree specie that produces the largest cones is the Sugar
Pine {Pinus lambertiana}, ranging in size from 12 to 24 inches
in length and 4 to 5 inches in diameter.
* Lignin is the substance found in wood that helps determine
how hard the wood will be. The more Lignin present, the harder
the wood and vice versa, the less present, the softer the
wood.
* The bark of the Cork Oak {Quercus suber} is used to produce
cork wine stoppers). The species grows in Northwest Africa and
Southwest Europe with Algeria, Morocco, Portugal and Spain,
manufacturing the majority of the world's supply.
* Up until a few years ago, the world's oldest living tree, a
Bristlecone Pine {Pinus longaeva}, named the Methuselah was
located in the Great Basin National Park, California. It is
approximately 4,844 years old. It is also the tallest living
{55 foot} Bristlecone Pine. Now there may be at least two trees
that are older!
With John White's refined measurement techniques of today {see
below}, The Lime {Tilia cordata}, in the Silkwood at Westonbirt
Arboretum (Near Tetbury, Gloucester, U.K.) is probably around
6000 years old.
The Fortingall Yew {Taxus baccata}, in Glen Lyon, Perthshire,
Scotland, might be as much as 9000 years old. The usual way of
calculating a trees age by counting the annual rings in the
trunk or by carbon dating, are not accurate when it comes to
Yews because a Yews trunk tends to hollow with age, while it
continues to grow by rooting its branches and wrapping them
around itself. There is even documentation of the formation of
aerial roots growing inside the hollow trunk. Another reason
are Yews have been known to stop growing for long periods of
time, {documented 325 years}, thus having no growth rings for
that period.
John White's method of estimating a tree's age is by measuring
its trunk circumference approximately 5 feet from ground level.
He had access to and studied more than 100,000 tree
measurements and multitudes of growth ring patterns from broken
or cutoff stumps and concluded that growth rings are closer
together on the outside portion of the stump. His technique
shows that trees grow at different rates in the three phases of
their lifetime, Formative, Middle Age and Senescence (Old Age}.
With the evidence he has complied, tables of expected growth,
relative to trunk size have been made for numerous common
trees.
* There are two types of trees that it is impossible to tell
how old they are by counting their growth rings. Trees produce
growth rings because of the distinguishable temperature changes
that occur over a yearly cycle causing their growth to slow
down and speed up.
Trees in certain tropical regions that have a consistent year
round climate where growth is ongoing do not form pronounced
growth rings. Trees that are endogenous, the majorities of
which is some specie of Palm tree {Arecaceae, Palmae or Palm
Family), which grow by adding new material inwards, do not
produce growth rings.
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