rising and falling while a pendulum is swinging. The relation between the two movements should be varied in different experi- ments. Or even a System of flywheels, eccentrics, and governor. 5. During these practices the mind must be absolutely confined to the object determined upon; no other thought must be allowed to intrude upon the consciousness. The moving Systems must be regular and harmonious. 6. Note carefully the duration of the experiments, the number and nature of the intruding thoughts, the tendency of the object itself to départ from the course laid out for it, and any other pheno- mena which may présent themselves. Avoid overstrain ; this is very important. 7. Proceed to imagine living objects; as a man, preferably sorne man known to, and respected by, yourself. 8. In the intervals of these experiments you may try to imagine the objects of the other senses, and to concentrate upon them. For example, try to imagine the taste of chocolaté, the smell of roses, the feeling of velvet, the Sound of a waterfall or the ticking of a watch. 9. Endeavour finally to shut out ail objects of any of the sen¬ sés, and prevent ail thoughts arising in your mind. When you feel you hâve attained some success in these practices, apply for examination, and should you pass, more complex and difficult prac¬ tices will be prescribed for you. VI. Physical limitations. 1. It is désirable that you should discover for yourself your physical limitations. 2 To this end ascertain for how many hours you can subsist without food or drink before your working capacity is seriously interfered with. 3. Ascertain how much alcohol you can take, and what forms of drunkenness assail you. 372 —