346 



CATALOGUE. — TRACTICAL ASTRONOMY, 



Boscovich de solis ct lunae defectibus. 4. 



1760. R. I. 

 Jeaural on the projection of ecli|)ses. S. E, 



IV. 818. 

 Witchell on the shadow of a spheroid. Ph. 



tr. 1767. 28. 

 Dionis du Sejour. A. P, 1775. 



Attributes a refraction of about i" to the lunar at- 

 mosphere. 



Dionis du Sejour on the quantity of light 

 falling on the moon in eclipses. A. P. 

 1776. 



Lemonnier on the eclipse of 24 June 1778. 

 A. P. 1778. 62. H. 34. 



With a good figure of UUoa's spot, and of the yfhole lu- 

 minous appearance. 



Lemonnier on total eclipses of the sun, and 

 on the lunar atmosphere. A. P. 1781. 243. 

 H. 47. 



Finds a refraction of 24" i. 



Marcorelle on the heat of the sun in an 



echpse. Roz. XIV. 352. 

 Ulloa on a total eclipse of the sun. Ph. tr. 



1779. 105. 



There was a great appearance of light round the moon, 

 which seemed to be agitated, and emitted rays to the dis- 

 tance of a diameter ; it was reddish next the moon, then 

 yellowish. Stars of the first and second magnitude were 

 seen, those of the first for about 4 minutes. A minute and 

 a quarter before the emersion, a small point was visible 

 near the disc of the moon. From the ruddy colour of the 

 light, the ring is referred to the moon's atmosphere : the 

 spot to a fissure in the moon's substance. Such a fissure 

 must have been above 40 miles in depth. 



Herschel on an eclipse of thesun.Ph.tr. 



1794. 39. 

 Schroter on the solar eclipse. Ph. tr. 1794. 



262. 



Goudin sur les eclipses du soleil. 4. Par. 



1800. 

 On calculating eclipses. Vince's Astronomy. 



Irradiation and diffraction in eclipses. See 



Physical Optics. 



The nodes coincide with the syzygies in 6890 lunations, 

 witii an angular error of only s' \ in pooo years. Cavallo, 

 from Gregory. 



The nodes and apsides return to the same position, after 

 about 83 revolutions of the nodes. 



Appearances of the primary and 

 secondary Planets conjointly. 



Eclipses of Jupiter's Satellites. 

 Short. Ph. ir. 1753. 268. 

 Lalandeon the effect ofellipticily in eclipses. 

 A. P. 1756. 364. H. 96. 1763, 413. 



Appearances of Comets. 



Euler on the effects to be apprehended from 

 a comet. N. C. Petr. XIX. 499. 



Lambert on the apparent orbit of comets. 

 A. Berl. 1771. 35'i. 



Flanetary Worlds, Appearances with 

 respect to different Planets. 



Buffon and others on the heat of the celes- 

 tial bodies. Roz. IX. 7. 



Ducarla on the rings of planets. Roz. XIX. 

 386. 



Practical Astronomy, in general. 



Cassini on the precautions necessary in astro- 

 nomical observations. A. P. 1736. 203. 



Simpson's calculation of the advantage of a 

 mean of several observations. Ph. tr. 1755. 

 82. 



Geography. Emerson's cyclomathesis. IX. 



Lalande on the use of interpolations in prac- 

 tical astronomy. A. P. 1761. 125. H.ga. 



Lalandt Exposition du calcul astronomique, 

 8. Paris, 1762. 

 Ace. A. P. 1762. H. 136. 



Rosters handbuch der practischen astrono- 

 niie. 



