Boraginaceæ.

Echinospermum floribundum Lehm.

Beggar-lice.

Echinospermum lappula Lehm.

Echinospermum redowskii Lehm.

The three lice-weed species are very common in the wooded districts. Lithospermum hirtum Lehm. Puccon.

Common.

Lithospermum angustifolium Michx.

Same as L. hirtum.

Convolvulaceæ.

Ipomoea purpurea Lam. Common morning-glory.

Escaped from cultivation (May 20).

Ipomoea leptophylla Torr. Wild morning-glory.
Common along watercourses.

Solanaceæ.

Solanum rostratum Dunal.

A common weed.

Verbenaceæ.

Verbena hastata Linn.

Verbena bracteosa Michx.

Labiatæ.

Isanthus cæruleus Michx. False pennyroyal.

Common.

Mentha canadensis Linn. Wild mint.

Common.

Hedonia hispida Pursh. Pennyroyal.

High, sandy points.

Salvia lanceolata Willd. Sage.

Very common.

Monarda punctata Linn. Horsemint.

Very common in the valleys.

Teucrium occidentale Gray.

Nepeta cataria Linn. Catnip.

Not common.

Plantaginaceæ.

Plantago major Linn. Common plantain. Amarantaceæ.

Amarantus albus Linn. Tumbleweed.

Very common.

Chenopodiaceæ.

Chenopodium album Linn. Pigweed.
Cultivated grounds, everywhere.

Polygonacea.

Rumex acetosella Linn. Sheep-sorrel.
Rumex venosus Pursh.

Occasionally seen.

Rumex altissimus Wood. Pale dock.

Rumex crispus Linn. Yellow dock.
Rumex verticillatus Linn. Water dock.

Only one plant of this species was seen.

Aristolochiaceæ.

Shepherdia canadensis Nutt. Yellow buffalo-berry.

This species and the next are to be found in nearly all of the creek valleys of the reservation. The fruit is used much by the Indians. The whites also use it for making jelly, which they highly prize. Shepherdia argentia Nutt. Scarlet buffalo-berry.

Utricaceæ.

Ulmus fluva Michx. Red elm.

Common along streams. It grows to be a large tree.

Grows in barn-yards and cultivated bottom lands.

Humulus lupulus Linn. Hop.

Common along streams.

Cupuliferæ.

Quercus obtusiloba Wood. Post oak.

Common.

Quercus macrocarpa Michx. Bur-oak.

Banks. This species furnishes over half of the wood of the region. Quercus macrocarpa, var. depressa, Engelm.

A dwarf species found in the deep, dry streams and ravines. It ranges in height from two feet to four feet.

Salicaceæ.

Salix amygdaloides Anders.

Salix rostrata Richardson.

Found on banks and at the water's edge along streams.

Salix longifolia Muhl.

This willow is found principally on White River flat. A bunch was found at the Ring Thunder day school.

Populus monilifera Ait. Cottonwood.

Borders of streams.

Populus heterophylla Wood.

Same as P. monilifera.

Coniferæ.

Pinus banksiana Lambert. Northern scrub-pine.

This tree is occasionally met with on the high points of the reservation.

Pinus pondorosa Dougl.

This tree is found on the high points and along the breaks of the Loup
Fork (Arickaree) formation.

Juniperus virginiana Linn. Red cedar.

Robison bad lands and on all the other Miocene Clay bad lands of the reservation. It ranges from a scrub to a tree twenty to forty feet in height.

Iridaceæ.

Sisyrinchium angustifolium Mill. Blue-eyed grass.
Common (May and June).

Sisyrinchium anceps Cav. Blue-eyed grass.
Same as S. angustifolium.

Liliaceæ.

Nothoscordum striatum Kunth. False garlic.

Very common everywhere.

Yucca angustifolia Pursh. Bear-grass.

Very common, especially on the Miocene formation.
Polygonatum giganteum Deitrich. Great Solomon's-seal.
Common on low ground near the streams.

Smilacina stellata Desf. False Solomon's-seal.
Common in low, wet places (May 1).

Commelinaceæ.

Tradescantia virginica Linn. Spiderwort.

Juncaceæ.

Juncus effusus Linn. Common rush.

Typhaceæ.

Typha latifolia Linn. Cattail flag.

Gramineæ.

Bromus klamii Gray. Wild chess.
Setaria glauca Beauv. Foxtail.

Common in cultivated fields.

Cenchrus tribuloides Linn. Bur grass.

Sandy soil, found principally on the Arickaree formation. Stifa viridula Tun. Feather-grass.

Agrostis vulgaris With. Redtop.

Scattering here and there.

Bouteloua oligostachya Torr. Grama-grass.

Found only in patches.

Buchloe dactyloides Engelm.

Buffalo-grass.

Ring Thunder Springs and in all the low, swampy places of the reser

vation.

Agaricus compestris.

Lycoperdon gigantum.

VI.

MATHEMATICAL AND PHYSICAL PAPERS.

"VARIATIONS OF LATITUDE."

By E. MILLER, University of Kansas, Lawrence.

"THE GENESIS OF GOLD IN MINERAL VEINS AND PLACERS."

By J. T. LOVEWELL, Topeka.

"THE GAS-ENGINE IN THE COMMERCIAL DEVELOPMENT OF KANSAS."

By P. F. WALKER, Lawrence.

"NOTE ON CERTAIN FORMULAS FOR THE DESIGN OF REENFORCED CONCRETE BEAMS."

By A. K. HUBBARD, Lawrence.

"EXAMINATION OF COAL-DUST AFTER EXPLOSIONS IN MINES OF SOUTHEASTERN KANSAS."

By EDWARD BARTOW, University of Illinois, Urbana.

"THE FOUCAULT EXPERIMENT."

By J. T. LOVEWELL, Topeka.

"A DEEP WELL AT EMPORIA."

By ALVA J. SMITH, Emporia.

"THE INTERPRETATION OF INDICATOR DIAGRAMS." By CHARLES I. CORP, Lawrence.

"A BIT OF ENGINEERING AT MOUNT VERNON."

By M. L. WARD, Ottawa University.

(197)