Young Blonde Girl Undresses Her Pink Dress In The Nature At Birch Trees

- In northern latitudes, birch is considered to be the most important allergenic tree pollen, with an estimated 15-20% of hay fever sufferers sensitive to birch pollen grains. The major allergen is a protein called Bet v I.
• Paper
Wood pulp made from birch gives relatively long and slender fibres for a hardwood. The thin walls cause the fibre to collapse upon drying, giving a paper with low bulk and low opacity. The birch fibres are, however, easily fibrillated and give about 75 % of the tensile strength of softwood. The low opacity makes it suitable for making glassine.
In India, the birch (Sanskrit: भुर्ज, bhurj) holds great historical significance in the culture of North India, where the thin bark coming off in winter was extensively used as writing paper. Birch paper (Sanskrit: भुर्ज पत्र, bhurj pətrə) is exceptionally durable and was the material used for many ancient Indian texts. This bark also has been used widely in ancient Russia as note paper (beresta) and for decorative purposes and even making footwear.