"Common Firefly (Photinus pyralis). a, larva; b, pupa in its earthen cell; c, beetle. d, e, f, leg,…
Natural and columnar sections at each end and at the center of a line 100 miles long and at right angles…
Natural and columnar sections at each end and in the center of a line 100 miles long and extending at…
Diagram illustrating the relationships of dip and strike of the inclined strata of an outcropping series…
"Bones of Human Foot, or Pes, the third principal segment of the hind limb, consisting of tarsus, metatarsus,…
A fault line valley. A fault line, is a planar fracture in rock in which the rock on one side of the…
"The part of any solid between two planes, which may be either parallel or inclined to each other: as,…
View of a village in the Schwartzwald, or Black Forest. The Black Forest stands in the elbow formed…
Tadorna cornuta, the Sheld-Drake or Bargander, ...shews a white collar on the lower neck followed by…
"The male figure is that of Sir John de Weston, of Weston-Lizars, in Staffordshire, and Isabel his wife,…
Diagram used to prove the theorem: "The area of the surface generated by a straight line revolving about…
"If a sector revolves about its bounding radius as an axis, it generates what may be called a spherical…
Diagram used to prove the theorem: "The volume of a spherical segment is equal to the sum of two cylinders…
A line engrailed for dividing a field. "Escutcheons that have more than one tincture are divided by…
A line invected for dividing a field. "Escutcheons that have more than one tincture are divided by lines…
A line wavy or undé for dividing a field. "Escutcheons that have more than one tincture are divided…
A line embattled or crenelle for dividing a field. "Escutcheons that have more than one tincture are…
A line nebule for dividing a field. "Escutcheons that have more than one tincture are divided by lines…
A line indented for dividing a field. "Escutcheons that have more than one tincture are divided by lines…
A line dancette for dividing a field. "Escutcheons that have more than one tincture are divided by lines…
A line angled for dividing a field. "Escutcheons that have more than one tincture are divided by lines…
A line bevilled for dividing a field. "Escutcheons that have more than one tincture are divided by lines…
A line escartelle for dividing a field. "Escutcheons that have more than one tincture are divided by…
A line nowy or franché for dividing a field. "Escutcheons that have more than one tincture are…
A line dove-tailed for dividing a field. "Escutcheons that have more than one tincture are divided by…
A line embattled grady or battled embattled for dividing a field. "Escutcheons that have more than one…
A line potent for dividing a field. "Escutcheons that have more than one tincture are divided by lines…
A line double arched for dividing a field. "Escutcheons that have more than one tincture are divided…
A line arched or enarched for dividing a field. "Escutcheons that have more than one tincture are divided…
A line urdée for dividing a field. "Escutcheons that have more than one tincture are divided…
A line radient for dividing a field. "Escutcheons that have more than one tincture are divided by lines…
"QUARTERED PER CROSS—The shield is divided into four parts, called quarters, by an horizontal…
"Argent, on a chief, gules, two mullets, sable. The chief is an ordinary terminated by an horizontal…
"Argent, a chief, azure, indented. The chief is an ordinary terminated by an horizontal line, which,…
Diagram of an ellipse that can used to illustrate the different parts. Segment MN is the major axis,…
Diagram an ellipse with a tangent line that illustrates "A line through a point on the ellipse and bisecting…
Diagram part of a hyperbola with a tangent line that illustrates "A line through a point on the hyperbola…
Diagram showing how to construct a conic when given the focus and the auxiliary circle. If the focus…
Illustration showing the correct and incorrect position of a right line pen against a T-square, triangle,…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…
Consonants have a closed or narrowly expanded adjustment of the vocal organs, so that in their production…