[{"id": 92692, "created": "2016-03-14T09:15:47.135807", "project_id": 212, "task_id": 40491, "user_id": 427, "user_ip": null, "finish_time": "2016-03-14T09:15:47.135831", "timeout": null, "calibration": null, "external_uid": null, "media_url": null, "info": {"other": "The captions in the figures are: Hemp rope (above); caoutchouc (below)", "translation": "3. Hemp\r\n\r\nThe stalks of the hemp, 1 - 3 m high, have similar bast fibres as flax, however, the single fibres are generally  somewhat coarser and longer. They are harvested in the same way as the flax fibres. Since they adhere tighter, however, they had to be ground under heavy stones after breaking. Due to fibre lenght, hemp is especially useful for the fabrication of ropes and cords but also for the making of finer fabrics and coarser, very firm canvas and packing cloth. The hemp seeds can be used as bird food. By pressing, hemp oil is gathered which is used as cooking oil in some regions. From hemp oil, various types of soft soap are produced. Countries for hemp and hemp products are Russia, Italy, Hungary, Germany, France and the USA. \r\nRelated plants are: hops, nettle.\r\n\r\n4. Caoutchouc tree\r\nIt grows in the tropics, when its bark is cut with a sharp knife, a milky juice flows from it. This contains up to 35 % caoutchouc. To gather caoutchouc, the milk is boiled down over a smoking fire (wild or djungle caoutchouc) or treated with acetic acid in troughs (plantation caoutchouc). As concerns this last procedure, the caoutchouc swims on the surface like the cream on the milk. The generated caoutchouc cakes are milled, dried and often smoked and come on the market as sheets or fells. The best ressource can be gained from the Brasilian caoutchouc trees which are today grown in all caoutchouc plantations. When heated with sulphur, rubber is generated. With a small addition of sulphur, soft rubber emerges (for balls, rubber cloths, tubes, bicycle and car tires). When larger amounts of sulphur are added, hard rubber or ebonite evolves (for pipes, switches, combs, buttons, fountain pens, gramophone discs).\r\nFRITZ BECKER"}}, {"id": 105568, "created": "2016-09-09T19:19:26.892546", "project_id": 212, "task_id": 40491, "user_id": 138, "user_ip": null, "finish_time": "2016-09-09T19:19:26.892572", "timeout": null, "calibration": null, "external_uid": null, "media_url": null, "info": {"other": "The page contains two drawings captioned:\r\n\r\nhemp rope\r\n\r\n\r\nrubber", "translation": "3. Hemp\r\n\r\nThe 1-3 m high stems of the hemp plant possess similar raffia bundles like flax, just the individual fibers are a bit coarser and longer. They are produced in the same manner as flax fibers. As they stick to each other more, they have do be scrubbed under heavy stones after breaking. Due to the length of the fibers, hemp is particularly suited for the manufacturing of ropes and threads, but also for the production of finer cloth and coarser, very hardy sail- and packing cloth. The hemp seeds can be used as birdseed. Hemp oil, which is used as cooking oil in some regions to this day, can be won by pressing them. Hemp oil also forms the basis for the production of various types of soft soap. Countries for hemp and hemp products are Russia, Italy, Hungary, Germany, France and the USA.\r\n\r\nRelated plants are: hops, stingy nettles.\r\n\r\n\r\n4. The Rubber Tree\r\n\r\nIt grows in the tropics. If its bark is cut with a sharp knife, a milky juice flows out. This contains up to 35% caoutchouc. To win the rubber, the milk is condensed over a smoky fire (wild- or jungle rubber) or treated with acetic acid in troughs (plantation rubber). With the latter process, the caoutchouc floats on top like cream on milk. The resulting caoutchouc slab is rolled and often smoked and then traded in the shape of slabs or sheets. The best raw material is supplied by Brazilian rubber trees, which are grown in all rubber plantations to this day. If caoutchouc is heated with sulfur, rubber results. Adding little sulfur produces soft rubber (for balls, rubber cloths, hoses, bicycle- or car tires). Adding larger quantities of sulfur produces hard rubber or Ebonite (for pipes, switches, combs, buttons, fountain pens, gramophone records).\r\n\r\nFritz Becker"}}]