Part 64

Pennsylvania Packet, The, 15

Pennsylvania, University of, 8, 15, 16

perpetual log, 51

Phillips, John M., 107

Jonathan, 99

Mrs. Mary W., ix

Pierce, Abner, 139

Pierpont, John, 68

Pitt, William, 24

Pitts, James, 86

planetarium, 36

planisphere, 51

Platt, Adah, 49

Augustus, 49, 52, 158, 163, 168, 171

Benjamin, 49, 51, 158, 160, 162, 163, 167, 171

William Augustus, 49

Plymouth Journal & Massachusetts Advertiser, 112, 113

Pope, Joseph, 39, 41, 158, 161, 167

Potter, John, 43, 158, 161, 171

Potts, Thomas, 12

W. L., 158, 163

Power, Alexander, 7

Price, Derek J. de Solla, ix, 3, 130

Priestley, Frances D., 140, 142

Dr. Joseph, 131, 140, 141, 143

Prime, Alfred Coxe, 29, 31, 63

Prince, John, 24, 158, 161, 162

Nathan, 8, 158