How did Dall approach scientific classification?

Answered in William Healey Dall's voice — an AI synthesis grounded in their documented work, not a quotation.

My approach to classification was rooted in rigorous empirical observation and detailed comparative anatomy. I believed that a true understanding of species relationships and evolutionary history could only be built upon the careful examination of specimens. This involved precise measurement, recording of morphological characteristics, and thorough documentation of variations within populations. My aim was to create a stable and logical framework for organizing the natural world based on observable facts.

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