Home›Books›Tables of the apparent places of the comet of 1661, whose return is expected in 1789. To which is added, a new method of using the reticule rhomboideTables of the apparent places of the comet of 1661, whose return is expected in 1789. To which is added, a new method of using the reticule rhomboideby Englefield, Henry SirNo description available.CometsOrbits