The chief country of production is the southern part of the United States of North America. Considerable crops are also grown in East India and Egypt, and lesser quantities come from the Caucasus, Turkestan, China, Brazil, Argentine, Peru and Africa. The continental consumption looks for the greater part to American cotton, but, also, East Indian is extensively used. In the Southern States of America, the first cotton ripens in August. The bolls containing cotton, will grow well into the Autumn, and even in Winter new bolls will be formed, and it is only a killing frost, which terminates the productive force of the plant. When the bolls are ripe, they open, and then the picking commences. As a rule, the first pickings are the best as to color and cleanness, and the longer the bolls are exposed to the inclemencies of the weather in Autumn and Winter, the more the quality will deteriorate. The picked cotton consists of two thirds of seed and one third of actual cotton. In order to obtain the fibre, the cotton is passed through a ginning machine. From the seeds, edible oil is gained and the residue is manufactured into food for cattle, while the cotton is formed into bales in specially constructed presses. It is natural, that cotton should show a great diversity of quality, owing to the influence of weather during the long period of picking. The color of cotton covers a fair range, one sees not only snow white and creamy cotton, but also bluish, grey, red and mixed colors. The value of cotton is determined by its quality and character. Of chief importance is the percentage of the loss during the cleaning process in the cotton mill. A normal percentage of loss for medium grades is 10%, this is likely to be higher, if the cotton has been picked during moist weather and contains much unripe cotton. The color is also of great importance, discolored cotton has a decidedly lower value, especially when this cannot be rectified by bleaching which is mainly the case with heavily spotted or bluish cotton. An even greater factor, than the outward appearance, is the inner value, which is represented by the length and strength of the fibre (staple). The staple length of common American cotton is from 24-28 mm. In great request are the qualities, which have a longer staple than 28 mm, especially when the staple is even, silky and strong. A difference of only 1/2 mm in the length of the staple, may mean a difference of 10% in the value. It is of the greatest importance to the cotton merchant as well as to the spinner, that the cotton is correctly judged as regards its outward appearance and the length of staple, this adjudication or classing is by no means an easy task. A certain system has been adopted by which the outward appearance of the cotton is fixed by so-called standards into classes. A certain number of cotton samples are arranged in a suitable flat box, in such a way that their surface represents the color and cleanness of the respective class.