On tlie Colour and Smell of Plants. 



In the first of these genera 10 percent, are odoriferous, and in the last 12.5 

 per cent. 



5. Yellow-flowering Genera. 



a Yellow- flowering genera, with 012 per cent, white. Crucianella with 33 

 per cent, yellow, 7 per cent, red, 31 per cent, green, 15 per cent, blue, 

 7 per cent, white. Of 13 species 1 is odoriferous, therefore 7-7 per cent. 



b Yellow-flowering genera, which contain 12 70 per cent white in their 

 flowers. 



In 175 species, 14 are odoriferous, = 18 per cent. 



c. Yellow flowering genera which contain 7 100 per cent, white in their 



flowers. 



Of thirty -four species, eighteen are odoriferous, equal 52 per cent. 



If we collect these principal results in one general view, we 

 have the following table : 



