Sept. 26, 1907
Dr. L. H. Pammel,
Botanical Dept., Ames, Iowa.
My dear Dr. Pammel:
I beg to acknowledge the receipt of your favor and also of the enclosures under separate cover which I consider very valuable contributions. I am still analyzing water…
Sept. 26, 1907
Dr. L. H. Pammel,
Botanical Dept., Ames, Iowa.
My dear Dr. Pammel:
I beg to acknowledge the receipt of your favor and also of the enclosures under separate cover which I consider very valuable contributions. I am still analyzing water…