The law favors no school, [42], [43], [47], [51], [115].

Physician must practise according to his school, [52].

Considered in determining skill needed, [63], [64].

Experts may be of any school, [115].

SCIENTIFIC BOOKS—

Not admissible as evidence, [99].

Rule different in Iowa and Wisconsin, [100].

Cannot be read to jury, [100][103].

Can be used to test witness, [101].

Can be read to jury in some States, [103][105].