LARAMIE GROUP n.
An extensive series of strata, principally developed in the Rocky Mountain region, as in the Laramie Mountains, and formerly supposed to be of the Tertiary age, but now generally regarded as Cretaceous, or of intermediate and transitional character. It contains beds of lignite, often valuable for coal, and is hence als…
LASSO n.
mbers in all coelenterates, and in a few animals of other groups. They are most highly developed in the tentacles of jellyfishes, hydroids, and Actiniæ. Each of these cells is filled with, fluid, and contains a long, slender, often barbed, hollow thread coiled up within it. When the cell contracts the thread is quickly…
LATENT a.
ivances are provided for as they arise. Burke. Latent buds (bot.), buds which remain undeveloped or dormant for a long time, but may at length grow. Latent heat (Physics), that quantity of heat which disappears or becomes concealed in a body while producing some change in it other than rise of temperature, as fusion, e…
LETTER n.
t, or enjoy some right; as, letters patent under the seal of England. -- Letter-sheet envelope, a stamped sheet of letter paper issued by the government, prepared to be folded and sealed for transmission by mail without an envelope. -- Letters testamentary (Law), an instrument granted by the proper officer to an exec…