Neatly done, clever for the time period.

Far from perfect -- I didn't really need the surprise autopsy photos, and the bit with the racehorses at the end was stupid and unthematic -- but still one of my favorites from this collection. Thoughtful and gentle shot composition intersects with some genuinely fascinating subject matter, and the soundtrack is appropriately staid.

A cute little informative film. Rather primitive scientifically but the charming visuals make up for that.