same family, xxxi

Sibley, George, 71

Sidgwick, Mrs. Henry, 1

Simpson, Alfred, 5

Siphon recorder, 68

Sisters, average number of, for any person, xxxi

Social rank, effects of, in producing noteworthiness, xxi
world, vastness of, xvii

"Soil, Physical Properties of the," 75

Sola, Abram de, 47

Somerville, Comm. Boyle, 78
E.O., 78

"Sound, Theory of," 68

Smyth, H. Warington, 46
Major N. Maskelyne, 46

Specific kinship, forms of, xxvi; abbreviation for, xxvi

"Spectator," 65

Spencer, Lord, 5

Spencer Stanhope, A.M.W., 54
John, 54
John R., 55
Sir Walter, 55

Sports, xlii

Stafford, Archdeacon of, 60

Standard of merit used, xiii

Stanhope, John Spencer, 54

Stanley, Lord, 43

Stebbing, Rev. Henry, 62, 83
Rev. T.R.R., 62, 83
William, 62

Stephen, Sir James Fitzjames, 73
Sir Leslie, 73

Stephenson, 6

Stewart-Wilson, Charles, 10

Stirling, Anna M.D.W., 55

Stoney, Bindon Blood, 63
Gerald, 63
G. Johnstone, 62

Story, A.M.R., 45

Stothard, Charles A., 38

Stowell, first Baron, 13, 30

Strachey, Sir Arthur, 65
Edward, 64
Sir Edward, 65, 83
George, 65
Giles Lytton, 66
Colonel Henry, 65
Sir Henry (first Bart.), 64
Sir Henry (second Bart.), 64
Sir John, 64
Joan Pernel, 66
John, F.R.S. (geologist), 65
John, Archdeacon of Suffolk, 65
John, St. Loe, 65
J. Beaumont, 66
Marjorie Colvile, 67
Oliver, 66
Lieut.-General Sir Richard, 63, 83
Richard, 64

Strahan, Aubrey, 67
Charles, 67
George, 67

Strain, severe mental, connection between this and fertility, xv

Stratification, theory of, 65

"Structural Botany, Introduction to," 59

Strutt, Edward, Baron Belper, 24
Hon. E.G., 68
Jedediah, 23
Joseph, 25
William, 24

Strutt, John W., Lord Rayleigh, 68, 81
Hon. Robert J., 68, 81

"Student's Modern Europe," 41

Success in obtaining Fellowships of Royal Society, xii; how achieved,
xviii, xix; factors producing, xx

"Sun and Stars, Physical Constitution of," 62

Surnames as affecting knowledge of distant kinsmen, xxxviii

Sykes, Daniel, 74
Joseph, 74

Symonds, John Addington, 65

TABLES:
I. Combinations of Ability and Environment, xxiii
II. Ability Independent of Environment, xxiv
III. Ability Correlated with Environment, xxv
IV. Abbreviations, xxvii
V. Number of kinsfolk in One Hundred Families who survived
Childhood, xxx
VI. Comparison of Result