Desmids of the United States and List of American Pediastrums - With Eleven Hundred Illustrations on Fifty-Three Colored Plates #247355

Although this work is believed to be exhaustive of all now known concerning the Desmids of the United States, yet the author regards it only as the pioneer to others much larger and therefore more valuable, wherein will be recorded the achievements of those who will perhaps be indebted to this work for their first introduction to so fascinating a study as that of the fresh-water Alyce of our country.