APPENDIX 



193 



Table 21. The variations in the percentages and in the amounts of 

 the pentosans found in the nannoplankton material. Compare with 

 the net plankton in table 12. 



Table 22. The range of the variations in the percentage and in the 

 amount of crude fiber in the nannoplankton of Lake Mendota. Com- 

 pare with the results for net plankton, table 13. 



