Archive image from page 563 of Cyclopedia of farm crops . Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada cyclopediaoffarm00bailuoft Year: 1922, c1907 Pulp mill and log pond. bamboo are the chief materials now used which are not the wastes of other industries. All plants are made up of certain definite chemi- cal constituents, among which are fats, tannins, lignin, pectose, coloring matters, sugar, starch and cellulose, and, when treated with certain chemicals, according to established methods, a more or less pure cellulose is obtai

- Image ID: W1W3W0
Archive image from page 563 of Cyclopedia of farm crops . Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada cyclopediaoffarm00bailuoft Year: 1922, c1907 Pulp mill and log pond. bamboo are the chief materials now used which are not the wastes of other industries. All plants are made up of certain definite chemi- cal constituents, among which are fats, tannins, lignin, pectose, coloring matters, sugar, starch and cellulose, and, when treated with certain chemicals, according to established methods, a more or less pure cellulose is obtai
Actep Burstov / Alamy Stock Photo
Image ID: W1W3W0
Archive image from page 563 of Cyclopedia of farm crops . Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada cyclopediaoffarm00bailuoft Year: 1922, c1907 Pulp mill and log pond. bamboo are the chief materials now used which are not the wastes of other industries. All plants are made up of certain definite chemi- cal constituents, among which are fats, tannins, lignin, pectose, coloring matters, sugar, starch and cellulose, and, when treated with certain chemicals, according to established methods, a more or less pure cellulose is obtained ; and it is on the amount, fibrous nature, softness and pliability of this cellu- lose that the paper-making value of the plant chiefly depends. Classification of materials. With regard to the quality and value of the paper produced, the chief materials may be classi- fied in four general groups: (1) Cellulose from cotton, flax, hemp and ramie; (2) cellulose from jute, manila and chemical wood ; (3) cellulose from esparto and straws ; (4) ground wood. From the consideration of the nature and the percentage of cellulose in the materials they are classified as, (a) simple cellulose : cotton, containing 91 per cent of cellulose ; [b) pecto-cellulose : flax, cellulose 82 per PAPEPv PLANTS cent; hemp, cellulose 77 per cent; ramie, cellu- iQse 76 per cent; Sunn hemp, cellulose 80 per cent; manila, cellulose 64 per cent; bamboo, cellulose GO per cent; sugar-cane, cellulose 50 per cent; straw, cellulose 46 per cent; esparto, cellulose 48 per cent; adansonia, cellulose 49 per cent; (c) ligno- cellulose: New Zealand hemp, cellulose 86 per cent; jute, cellulose 64 per cent; pine, cellulose 57 per cent; poplar, cellulose 53 per cent. Classification of papers. With regard to the uses to which they are put, papers are divided into several classes: (1) Writing paper, embracing what are known as bond, ledger, record, linen, bank note, ordinary writing and envelope papers. These are thoroug