Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 1-19

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 20-24

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 25-26

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 26-27

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 27-28

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 28

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 29

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 30-31

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 31-32

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 32

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 38-42

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 42-43

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 175-188

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 189-207

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 209-215

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 217-220

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 221-228

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 229-234

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 235-236

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 236-237

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 237-238

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 238-239

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 239

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 240

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 241

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 242-243

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 243-244

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 244

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 245-246

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 263-269

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 271-274

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 275-281

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 283-290

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 291

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 292-294

Published in Transactions of The American Microscopical Society, in 1919, in volume 38, pages 304