[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D.](https://indike.org/pramana/ins.science.ray-1902) › v2.c35.14 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c35.14 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c35.14 - **Language:** English ### [v2.c35.14](https://indike.org/pramana/ins.science.ray-1902.v2.c35.14) Fallacies of Observation—Mal-observation and Non-observation :—These were carefully studied in relation to errors of observation, and Hallucination (भ्रम, अभ्यास, आरोप),—which were ascribed to three causes :—(a) Dosha, दोष, defect of sense organ, as of the eye in jaundice, or of the skin in certain forms of leprosy (leading to tactile insensibility, cf. Susruta), or defect of necessary stimulus, \*e.g.\*, too faint light, or undue distance or nearness, in vision; (b) Samprayoga, सम्प्रयोग, presentation of a part or an aspect instead of the whole; and (c) Sanskára, संस्कार, the disturbing influence of mental predisposition, \*e.g.\* expectation, memory, habit, prejudice, etc. - [Previous: v2.c35.13](https://indike.org/pramana/ins.science.ray-1902.v2.c35.13) - [Next: v2.c35.15](https://indike.org/pramana/ins.science.ray-1902.v2.c35.15) - [Up: v2.c35](https://indike.org/pramana/ins.science.ray-1902.v2.c35) ## Linked texts (1) - [Suśrutasaṃhitā](https://indike.org/pramana/in.med.samhita.susruta) — Suśruta & Nāgārjuna (siddha/alchemist), Sanskrit --- Source: [https://indike.org/pramana/ins.science.ray-1902.v2.c35.14](https://indike.org/pramana/ins.science.ray-1902.v2.c35.14) · Pramāṇa