9 o 



MA THEM A TIC A L SCIENCES. 



Fig. 62. The Burgher in Winter. 



Fig. 63. The Sower. 



Fig. 64. Lovers in Springtide. 



1 ig. 65. The Sheep Sheurer. 



Fig. 66. A Ride in Summer. 



Fig. 67. The Reaper. 



Miniatures from the Calendar of a "Book of Hours. "-Manuscript of the beginning of the 



Sixteenth Century. 



