Excerpt from Annual Report on the Geological Survey of Pennsylvania Sir - In compliance with the third section of the act Of 29th March, 1836, 'entitled, An Act

Excerpt from Fifth Annual Report on the Geological Survey of Pennsylvania Sm - In compliance with the Act of Assembly, requiring the State Geologist to submit t

Excerpt from Annual Report of the Geological Survey of Pennsylvania for 1885-1887, Vol. 1 All these points will be treated of in the successive chap ters of thi

Excerpt from Annual Report, Geological Survey of Pennsylvania, 1886, Vol. 3: Report on the Anthracite Region In addition to these two reports there was publishe

Excerpt from Fourth Annual Report on the Geological Survey of the State of Pennsylvania, 1840 In 1, the Society} 31125 stern 111110111111 Appalachia the South D