A Method of Oiling Streams and Drains by an Automatic Drip System

or whisky) with cork. B. A cork. C. Glass tubing ^-inch calibre through the cork, \ inch outside the cork and ? inch beyond the inner limit of the cork. D. Stems of thatch grass 6 to 12 in number inside glass tubing. E. Bamboo rod. F. String tying bottle to bamboo rod. * If required make a very small hole here; this may be made by a steel driller. This is not necessary as bubbles of air find their way into the bottle via the spaces between the stems of thatch grass. 1