Describes several different species of ferns and traces their reproductive cycle which involves neither fruits nor seeds.
Born in Baltimore County, Md., September 14, 1872. Was graduated at Johns Hopkins University in 1895. Ph.D. in 1899. Was for a time a close student offerns, and issued his notable book, “Ferns,” in 1903, containing his “Analytical Key ...
The goal of this book is to compile the most relevant research done with ferns during the last decade.
Barnes, William Harry 11 Barnes, Robert Percy (1898–1990) organic chemist In 1933, Robert Percy Barnes became the first black student to receive a Ph.D. in chemistry from Harvard University. He also served on the National Science ...
That growing American elite was most likely to produce the "lake-traveler" or "voyager" or "gazer" of Woolson's essay and was also most likely to subscribe to Picturesque America and Appletons' Journal. It is thus noteworthy that ...
Fun facts and Crossword puzzles to match the story are included. This is the first in a series leading to our National Park, Jr Ranger Adventures beginning with Paul Bunyan in Yosemite.
These gorgeous guides celebrate the beauty of each plant and form a comprehensive library that every plant lover will want to own.