Trees. Tourist tips

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Trees. Tourist tips

Tourist tips

What can give trees for food?

The outer rough bark is inedible, but in the spring, when the sap flow begins, the thin inner bark of some trees can be eaten. To get to the inner layer, you should tear off the bark near the butt of the tree or from the roots that come to the surface. The inner bark can be eaten raw, but when boiled, it turns into a gelatinous mass that can be baked and ground, and then used in place of flour.

Trees with the best inner bark: slippery elm, American larch, linden, birch, aspen, poplar, maple, spruce, willow (including its undersized northern varieties), pine.

Another use of the inner bark. Birch bark can be removed in large sheets and used in the construction of shelters, boats or containers. From birch bark, torn into strips, ropes are obtained.

Gum and resin

From cuts on the trunks of some trees, juice is released, which solidifies in the form of bumps or lumps. If this mass dissolves in water, then it is gum; if not, then resin. Both have nutritional properties. Some types of gum and resin burn very well and are ideal for starting fires.

Birch and maple syrup

Make a V-shaped cut on the tree trunk and collect the sweet juice that flows out. To do this, under the notch, make a hole in the trunk and insert a sheet into it, through which, like a chute, the juice will flow into the container. The juice collected during the day must be boiled until it thickens and turns into syrup.

spruce tea

Fresh green spruce needles are boiled in water, resulting in a tea rich in vitamin C. Alternatively, you can chew tender young spruce needles, whose starchy green tips are especially pleasant in spring. Spruce grows in the temperate zone and is found far to the north, being an important food source.

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Memory shirt 15.11.2001

Florence-based Italian haute couture firm Corpo Novo has created a men's shirt that rolls up its sleeves when the wearer gets hot. In addition, it must be ironed not with an iron, but with a hairdryer.

The fact is that for every five fibers of nylon in the material of the shirt, there is one thin wire made of nitinol - an alloy with shape memory. Products from this alloy, if they are given a certain shape at a certain temperature, and then this shape is changed, upon returning to the critical temperature, they “remember” the given configuration. So, if you roll up the sleeves of this shirt and heat it up to, say, 35 degrees, and then cool the fabric and lower the sleeves, then when they reach 35 degrees again, they will roll up themselves.

In the same way, it is enough to iron this shirt once, for example, with an iron with a temperature of 50 degrees. Then you can crumple it however you like. After heating to this temperature, it will smooth itself out, each fold will straighten out.

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