Note 56 — Chapter V
Reading edition
Notes on Specimens of Eozoon, "Memoirs of Peter Redpath Museum," 1888.
[57] Bul. Nat. Hist. New Brunswick, No. IX., 1890.
[58] Annals N. Y. Academy of Science, 1888.
[59] Walcott, Lower Cambrian, 1892.
[60] Natural Science, Oct., 1892.