An illustration of military personnel measuring close intervals.

Close Military Interval Measurement

An illustration of military personnel measuring close intervals.

An illustration of military personnel measuring distance.

Military Distance Measurement

An illustration of military personnel measuring distance.

"Diagram illustrating development of erosion profiles on laccolith domes." -Walcott, 1901

Erosion Development

"Diagram illustrating development of erosion profiles on laccolith domes." -Walcott, 1901

Diagrams showing the origins of eskers. A) A tunnel under the ice, nearly filled with sand and gravel by the subglacial stream which built up its bed to the level of the outlet. B) The same deposit after the ice melting of the supporting ice walls. Slumping has produced the characteristic steep side slopes.

Origin of Eskers

Diagrams showing the origins of eskers. A) A tunnel under the ice, nearly filled with sand and gravel…

Diagram illustrating block faulting, and the initial stage in the formation of block mountains.

Block Faulting

Diagram illustrating block faulting, and the initial stage in the formation of block mountains.

An illustration of military men in standing in formation of file.

Military Men in Formation of File

An illustration of military men in standing in formation of file.

An illustration of military personnel in formation changing direction.

Military Personnel in Formation Changing Direction

An illustration of military personnel in formation changing direction.

An illustration of military personnel in formation picking up full pace after changing direction.

Military Personnel Formation Marching

An illustration of military personnel in formation picking up full pace after changing direction.

An illustration of the formation of capsules about two sporoblasts of Cyclospora Cayetanensis.

Formation of Capsules about the Two Sporoblasts

An illustration of the formation of capsules about two sporoblasts of Cyclospora Cayetanensis.

An illustration of military personnel forward marching in a four line formation.

Forward March in Four File Formation

An illustration of military personnel forward marching in a four line formation.

An illustration of a four person file military formation.

Four Person File Military Formation

An illustration of a four person file military formation.

Disgrams illustrating the mode of formation of the frontal apron-plain and its relation to the terminal moraine.

Frontal Apron Plain

Disgrams illustrating the mode of formation of the frontal apron-plain and its relation to the terminal…

An illustration of military personnel measuring intervals.

Military Interval Measurement

An illustration of military personnel measuring intervals.

Diagrams to illustrate the mode of formation of kettle holes in glacial deposits.

Formation of Kettle Holes

Diagrams to illustrate the mode of formation of kettle holes in glacial deposits.

An illustration of a man looking at a formation of men.

Man Looking at Formation of Men

An illustration of a man looking at a formation of men.

An illustration of military personnel marching straight with the right side of the image illustrating direction in which men are marching.

Military Personnel Marching to the Right

An illustration of military personnel marching straight with the right side of the image illustrating…

An illustration of a large group of men in a tight formation.

Men in Tight Fomation

An illustration of a large group of men in a tight formation.

An illustration of military personnel measuring normal intervals.

Normal Military Interval Measurement

An illustration of military personnel measuring normal intervals.

Diagram illustrating the formation of phacoliths.

Phacoliths

Diagram illustrating the formation of phacoliths.

Diagram illustrating the formation of contraction prisms. The centers of attraction are connected by solid lines. The prisms formed are dotted.

Contraction Prisms

Diagram illustrating the formation of contraction prisms. The centers of attraction are connected by…

An illustration of the military men in formation of rank.

Military Men in Formation of Rank

An illustration of the military men in formation of rank.

An illustration of a man standing upon stacked rocks.

Rock formation

An illustration of a man standing upon stacked rocks.

An illustration of a view from Rock City.

Rock Formation

An illustration of a view from Rock City.

An illustration of a three person file military formation.

Three Person File Military Formation

An illustration of a three person file military formation.

An illustration of a two person file military formation.

Two Person File Military Formation

An illustration of a two person file military formation.