So 



THE TEACHING BOTANIST 



windows, which, if all in one wall, should preferably face 

 the north in order to avoid exposure to direct sunlight ; 

 but this point is really of no great consequence, since 

 thick white shades perfectly temper the direct sun, and 



! 





M 



G.T 



W 



SCALE OP rEElT 



I I I 



20 



10 8 6 4 



FIG. i. Plan for a square laboratory, lighted on two adjacent sides. C, case 

 for museum specimens; G. T., gas and tool table; L, lockers for students' 

 effects, etc.; Af, tabks for materials, etc.; P, teacher's platform, with black- 

 board; A', sink; IV, Wardian case. 



in short winter days it is an advantage to have the win- 

 dows face in the lightest direction. The walls should be 



