Published in Transactions of the American Microscopical Society, in 1921, in volume 40, pages 1-13

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 168-176

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 89-93

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 31-46

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 116-117

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 158-160

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 59-74

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 177-181

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 75-88

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 161-167

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 144-157

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 118-143

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 28-30

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 26-27

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 182-186

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 14-25

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 97-115

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 195-199

Published in Transactions of The American Microscopical Society, in 1921, in volume 40, pages 187-194