The point of the ecliptic cut by the quadrant, will shew the day of the month on the horizon, when the star rises heliacally. ... In our almanacs the dog days begin on the 3d of July, which is 12 days after the summer solstice, and end on the 11thanbsp;...
|Title||:||A New Treatise on the Use of the Globes, and Practical Astronomy; Or a Comprehensive View of the System of the World. In Four Parts. ... The Whole Serving as an Introduction to the Higher Astronomy and Natural Philosophy, is Illustrated with a Variety of Important Notes, Useful Remarks, &c. and Each Problem with Several Examples. The Necessary Astronomical Instruments are Pointed Out, and the Most Useful Tables are Inserted in the Work. Designed for the Instruction of Youth, and Particularly Adapted to the United States. By J. Wallace, ..|