Sunshine, Rain, and Wind 
food material, and would of course make excellent 
manure. 
Bacteria are present to work up such decaying matter 
as these. Unfortunately these observations were made 
too late in the season to know whether mites were 
common or not. Should it be found that they frequent 
these plants and devour the fungus spores, pollen, &c., 
then their droppings should be of the finest manurial 
value. 
If this turns out to be correct, then plants often 
possess very elaborate arrangements both for dealing 
with atmospheric dust and for turning dangerous disease 
germs into a useful sort of plant food. 
1 Nestler, Lindau, Freeman. ? Thomas. 8 Kosaroff. 
* Hildebrandt. 5 Journ. R. Hort. Soc., April 1902, p. goo. 
® Freidenfeldt. 7 and ® Hansgirg. ® Warming. 
10 Peirce. 1 Cieslar. 32 Krasan. 
138 Adamovic. 14Von Wettstein. 145 Knuth, 
16 Boodle. 17 Parkin and Pearson. 
18 Kirchner, Low, and Schroter. 19 Hesselmann. 
20 Katic, Koning, and Heinsius, 21 Went. 
22 Burkill. 28 Weisse, Yule, Shull. 
24 Goebel, Groom. 26 Ursprung. 28 Henslow, Hartig. 
2? Tshirch, Wildt. 28 Biicher. 29 Macnaghten-Jones, 
194 
