of the grinding is low,” is considered by Jastrow to mean impaired hearing, and by Smith as a lowered rate of metabolic processes, such as assimilation, blood formation, and various secretions. “And he shall rise up at the voice of the bird,” implies, according to Smith and Mead, the early waking of the elderly; “and all the daughters of music shall be brought low” signifies to Laurentius the failure of voice, to Mead deafness, and to Smith all the organs concerned with sounds, namely the lips, tongue, larynx, and the auditory apparatus. “Also when they shall be afraid of that which is high, and fears shall be in the way” is regarded by Smith as describing the general mental attitude of anxiety for things both small and great and a bad head for height, but a more modern commentator suggests that “afraid of that which is high” refers to dyspnoea on climbing a hill. “And the almond tree shall flourish” is by Laurentius, Hall, and Smith thought to refer to the white hair or “churchyard flowers” of the old, but Mead argued that loss of smell is meant. “And the grasshopper shall be a burden” has been very variously interpreted: Hall is content to accept the literal meaning that the least weight is a nuisance; Laurentius and Lowe understand oedema of the legs; John Smith that the aged body undergoes the reverse change of shrivelling, hardening, and angularity; Mead suggests scrotal hernia, and Jastrow, as according to the Talmud the grasshopper is a symbol for the male sexual organ, considers that the sentence refers to the loss of sexual activity. In the sixth verse the words “Or ever the silver cord be loosed,” refers, according to Laurentius, Lowe, Mead, and Jastrow, to kyphosis, but Smith translates them into paralysis of the spinal cord and nerves. “Or the golden bowl be broken,” signifies cardiac failure to Laurentius and Lowe, but cerebral haemorrhage to Smith, who thus explains the next line, “or the pitcher (the veins) be broken at the fountain (the right ventricle), or the wheel (the arterial circulation) broken at the cistern” (the left ventricle), and therefore concludes that King Solomon was perfectly acquainted with the circulation of the blood discovered by William Harvey in 1616. “The pitcher” is regarded as the vena cava by Laurentius, and as the urinary bladder by Mead and Jastrow; “the wheel broken at the cistern” suggests the kidneys and bladder to Laurentius and Lowe, cardiac failure to Mead, and intestinal and hepatic insufficiency to Jastrow. IX DISTINCTION BETWEEN HEALTHY AND MORBID OLD AGE