Dec, 1921] 
PATON POLLEN AND POLLEN ENZYMES 
built, if there is a parallelism with the chemical composition of animal 
sperms. 
Table 2. Analysis of Pine Pollen, Przybytek and Famititzin, 1885 {figures indicate per- 
centages) 
Water 6.79 
Ash 
Calcium oxid 35-23 
Sodium oxid 3.62 
Magnesia 7.00 
Calcium 0.88 
Iron and aluminum oxid 5.30 
Phosphoric acid (anhydrous) 29,86 
Sulphuric acid (anhydrous) 14-83 
Chlorine 0.99 
Manganese a trace 
Table 3. Stift's Analyses of Pollen from a Cattle-fodder Beet and from two Varieties of 
Sugar Beet {figures indicate percentages) 
Fodder Beet, 
Sugar Beet, 
Sugar Beet, 
1895 
1895 
1900 
Protein 
15-25 
16.90 
16.68 
Nitrogenous substances not protein 
2.50 
2-77 
5.82 
Fat (ether extract) 
3-i8 
3-52 
5.47 
Starch and dextrin 
0.80 
0.89 
0.89 
Pentosan 
11.06 
12.26 
7-27 
Other nitrogen-free extractives 
23-70 
26.27 
28.86 
25.45 
28.21 
27-95 
Ash 
8.28 
9.18 
7-13 
9-78 
Table 4. HeyVs Analysis of Ragweed Pollen {1917) 
Alcohol-soluble (42.9 percent) contains (in percentages) : 
Moisture 5-28 
Starch (diastase) 0.00 
Crude fiber 12.20 
Pentosans 7.26 
Protein 24.40 
Nitrogen in alcoholic extract 1.08 
Ash 5-39 
Dextrin 2.10 
Fat 10.80 
Lecithin 0.75 
Ether-soluble, but not ligroin-soluble 1.75 
Sucrose 0.40 
Glucose 1 .60 
Resin i7-40 
A nitrogenous base trace 
From the above review and from the analyses given in tables 1-7 it is 
clear that our knowledge of the chemistry of the pollen of the very numerous 
species of flowering plants is very limited. It is a discouraging problem 
