Note 11 — J. E. MARR, M.A., F.R.S.
Reading edition
For information concerning use of acids see especially Wiman, C. "Ueber die Graptoliten," Bull. Geol. Inst., Upsala, No. 4, vol. II. Part II.
Reading edition
For information concerning use of acids see especially Wiman, C. "Ueber die Graptoliten," Bull. Geol. Inst., Upsala, No. 4, vol. II. Part II.