COMMON THINGS THE ALMANACK. 



84. Between the 8th and the 15th day from the time of con- 

 junction, the moon, still advancing further and further eastward 

 from the sun, will be seen eastward of the meridian at the time of 

 sunset, and will then have the form represented in fig. 9, which is 

 called the gibbous form, the edge presented westward and towards 

 the sun being semi-circular, and that presented eastward and in 

 the direction in which the moon is moving, being a semi-ellipse 



Fig. 9. 



convex towards the east. This is, therefore, the form and 

 appearance of the moon between the first quarter and the full 

 moon, and the nearer it comes to the day of full moon that is, 

 to the fifteenth day from conjunction, the broader will be the 

 gibbous disc, and the nearer will the outline approach to an 

 exact circle. 



48 



