[Types of land] According to the wise, one should not to resort to an action which either immediately or later results in evil or undesirable consequences.
(अल्पोदकद्रुमो यस्तु प्रवातः प्रचुरातपः| ज्ञेयः स जाङ्गलो देशः स्वल्परोगतमोऽपि च ||४७||
A region that sees scanty rainfall and desert vegetation is called jangala desha (arid land), and such a land is swept by high winds and abundant sunshine. It causes minimum number of diseases.
प्रचुरोदकवृक्षो यो निवातो दुर्लभातपः| अनूपो बहुदोषश्च, समः साधारणो मतः) ||४८||
That region which has abundant rainfall and luxuriant vegetation, scarcity of air and sunshine is known as anupa desha (wet land). The climate in such lands causes many dosha (bodily disorders). If the characteristics of these two varieties of desha are in balance in a land, such a place is known as sadharana desha (normal land).
[Summary] To sum up, premonitory signs and symptoms that precede destruction of communities, environmental factors that cause such calamities (along with their individual characteristics), remedial measures , sources of the destructive causes,
प्राग्विकारसमुत्पत्तिरायुषश्च क्षयक्रमः| मरणं प्रति भूतानां कालाकालविनिश्चयः ||५०||
origin of diseases in ancient period, the order of gradual diminution in the life-span, the determination of timely and untimely death, cause of premature death,