ments, a special ar- pass the solar rays that form a luminous point upon a it to Dr. C. V. Riley, entomologist, t>f the Department rangement permits of directly reading the mean time. screen carried by the circle, H, and upon which has of Agriculture, who has favored us with the following: Such,… … differ essentially from a very old sundial that we have Fig. l.-THEVENOT'S SUNDIAL. already described. But the curve of the mean time will permit us to determine even the latitude of the Major General Oliver (Pig. 3). The time is read upon place, if we do not know it. It will suffice for this to an…
Boron · Inches · Munn · Feet · Color · Scientific American · Water · Low pressure · Light wash · Wood pulp · Hot water · High pressure · Red heat · Reliance manufacturing · Dull red · Fire box
Internet Archive · Public domain (published before 1931). Free to use for anything.
