MIDLAND NATURALIST. 99 
Birds seen on the dates after their names: 
Hummingbird, 7, 8, 20, 28. 
Bobolink, 9, 12, 13, 17 to 20, 
32,20, 27: 
Cardinal, 22. 
Cedarbird, 3, 18, 24, 26, 27. 
Yellow Warbler, 9, 13 to 22, 
20, 27. 
White-breasted Nuthatch, 4, 6, 
7» 9, 12, I3, I9, 20, 28, 29, 30. 
Purple Martin, 24, 25, 28, 29, 30. 
Swamp Sparrow, 1, 14, 20, 21, 23. 
Redstart, 2. 
Long-billed Marsh Wren, 22. 
Belted Kingfisher, 2, 5, 7, 8, 12, 
17, 20, 27: 
Crested Flycatcher, 2, 3, 4, 5. 
Yellow-throated Vireo, 8, 7, 14, 
15:47 
Towhee, 2, 19 to 22, 24, 26. 
Red-eyed Vireo, t, 2, 3, 6, 15, 
I9 to 23, 25. 
Maryland Yellowthroat, 20, 21, 
22,25, 26. 
Nighthawk, 19, 25. 
Kildeer, 2; 4, 11; 12, 15; 17, 26, 
21, 22, 25, 26, 28, 29. 
Loggerhead Shrike, 2, 5, 14, 19, 
20, 21, 23, 26, 30. 
Number of species seen each day: 
une 1, 27 
ac 2 
ac 
I5, 35 
Total number of species seen, 50. 
Some Thalictra from North Dakota. 
EDWARD L. GREENE. 
The Eastern half of the State of North Dakota, lies well with- 
in our Midland Prairie Region. 
A little to the eastward of the 
very middle of the state there is presented a geographical feature of 
