In preparing this series of lessons for students of Western lands, I have been compelled to proceed along lines exactly opposite to those which I would have chosen had these lessons been for students in India. This because of the diametrically opposite mental attitudes of the students of these two several lands. The student in India expects the teacher to state positively the principles involved, and the methods whereby these principles may be manifested, together with frequent illustrations serving to link the new knowledge to some already known thing. The Western student, on the other hand, is accustomed to maintaining the skeptical attitude of mind-the scientific attitude of doubt and demand for proof-and the teacher so understands it. Both are accustomed to illustrations bringing out the principles involved, but these illustrations must not be fanciful or figurative-they must be actual cases, well authenticated and vouched for as evidence. In short, the Western teacher is expected to actually "prove" to his students his principles and methods, before he may expect them to be accepted. Consequently, in this series of lessons, I have sought to follow the Western method rather than the Hindu.