"History of Life and Death" is a treatise on medicine, with observations natural and experimental for the prolonging of life.

Terrain-oriented reconnaissance is a survey of the terrain (its features, weather, and other natural observations).

Anatomy of the Horse was part of a culture of natural observation that penetrated British society.

The culture of natural observation that gave birth to Darwin's revolutionary book fuelled the great age of British painting.

Extend children's natural observation by providing the language necessary to help children articulate what they see happening.

The proponents of creation science often say that they are concerned with religious and moral questions as well as natural observations and predictive hypotheses.

Since the 1920s, literalist creationism in America has contested scientific theories, such as that of evolution, which derive from natural observations of the universe and life.

Each of his five previous novels has been marked by intense natural observation, a kind of morbid realism.

This text combines natural observations, humour, storytelling, and travel.

The displays, which include telescopes, microscopes, skeletons and feathers, are designed to expose children to fundamentals of the scientific method in natural observation.