Lefroy, Sir John, on intelligence of a dog, [99]

Leibnitz on teaching a dog to articulate, [128]

Leroy on intelligence of wolf, [53];

of stag, [54], [55];

of fox, [55], [56];

of rooks, [56], [57]

Lewes, G. H., on the logic of feelings and of signs, [47];

on judgment, [164];

on pre-perception, [185]

Links between ape and man missing, [19]