46 
BULLETIN 794, U. S. DEPARTMENT OF AGEICULTURE. 
MIDDLE CHAIN LAKE, BROWN COUNTY. 
August 16, 1915. 
Description.— Marsh at east end. Bog at west end, which is inaccessible. 
Lake entirely filled with vegetation. Bottom mucky; greatest depth, 4 feet; 
inlet from West Chain Lake during high water ; outlet into East Chain Lake. 
Distribution of Vegetation. 
SHORE PLANTS. 
1. Cord-grass (Spartina michauxiana) . 
2. Switchgrass (Panicum virgatum) . 
3. Redtop (Agrostis alba). 
4. Couch-grass (Agropyron repens). 
5. Wild millet (Echinochloa crus-galli) . 
Common. 
6. Wild rye (Elymus canadensis). Com- 
mon. 
7. Indian grass (Sorgliastrum nutans). 
8. Shining sedge (Ctjperus rivularis), 
9. Straw sedge (Cyperus strigosus). 
10. Sedge (Carex scoparia). 
11. Sedge (Carex nebraskensis) . 
12. Rush (Juncus nodosus). 
13. Rush (Juncus marginatus) . 
14. Rush (Juncus dudleyi). 
15. Water hemlock (Cicuta maculata). 
SEMISUBAEERGED PLANTS. 
Dominants: 21. 
16. Wapato (Sagittaria latifolia). 
17. Big bulrush (Scirpus occide?italis) . 
Secondary species: 
18. Bur reed (Sparganium eurycarpum). 
19. Cat-tail (Typha latifolia) . 
20. Spike rush (Eleocharis acuminata). 
River bulrush (Scirpus fluviatilis).* 
Abundant ; mature fruit. 
Reed (Phragynites communis). 
Wild rice (Zizania palustris). Very 
little. 
Water smartweed (Polygonum amphi- 
bium). 
SUBMERGED PLANTS. 
Dominants: 
25. Waterweed (Philotria canadensis) . 
26. Coontail (Ceratophyllum demersum). 
Secondary species: 
27. Sago pondweed (Potamogeton pecti- 
natus). 
28. Eelgrass pondweed (Potamogeton com- 
pressus). 
29. Floating pondweed (Potamogeton na- 
tans). 
30. Curly pondweed (Potamogeton per- 
foliatus richardsonii) . 
31. Small pondweed (Potamogeton pusil- 
lus). 
^Yild-duck foods. — Plants in the above list which have considerable value as 
food for wild ducks are : Nos. 5, 16, 17, 23, 26, 27, and 31 ; those of less impor- 
tance are : Nos. 1, 2 ? 8, 9, 10, 11, IS, 21, 24, 25, 28, 29, and 30 ; the remainder 
are of no known value. 
Notes on Other Brown County Lakes. 
There are about 20 acres of wild rice (Zizania palustris) at tLe west end of 
Long Lake, and about 20 to 30 acres at Frank Wales Swamp, between Long 
Lake and Clopper Lake. Filbrick Lake is said to contain a considerable area 
of rice. 
DEWEY LAKE, CHERRY COUNTY. 
August 21-24, 1915. 
Description. — Extensive marsh area at west end of the lake. Mostly open 
water ; depth 9 to 10 feet ; bottom mostly sandy except at west end and ex- 
treme east end, which is muck. Outlet into Willow Lake ; inlet from White 
Water Lake ; this inflow from White Water Lake during high water has prob- 
ably rendered Dewey Lake somewhat alkaline. 
