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A MONTHLY REVIEW OF

SCIENTIFIC PROGRESS.

THE FOLLOWING ARE A FEW FACTS AS TO THE WORK OF"NATURAL SCIENCE" DURING 1895.

NATURAL SCIENCE for 1895 has published contributions from 104 distinguished writers.

NATURAL SCIENCE for 1895 has published 63 specially contrib.

uted Articles in all branches of Zoology, Botany, and Geology, besides the large July number, condensing the results of the "Challenger" Expedition.

NATURAL SCIENCE for 1895 has published 24 full-page Plates illustrating the above-mentioned articles.

NATURAL SCIENCE for 1895 has reviewed 100 Books, and noticed 340 Papers, Pamphlets and Periodicals.

NATURAL SCIENCE for 1895 has contained 45 Text-figures. NATURAL SCIENCE for 1895 has given Obituary Notices of 53 men of science, and recorded more briefly the deaths of 77 more. NATURAL SCIENCE for 1895 has announced 210 Appointments. NATURAL SCIENCE for 1895 has given the news of 67 Museums, and of all the leading Societies and Universities.

These statements can be verified by anyone who will buy the Volumes for 1895, which contain 885 large 8vo pages, and are sold for $3.50. Specimen copies, post free, 15 cts.

Apart from the high character of the contents, as shown by the eminence of the contributors, and as testified to by the Scientific and Public Press of all Countries, the above facts show that NATURAL SCIENCE is the Cheapest as well as the Best Scientific Monthly.

NATURAL SCIENCE for 1896 hopes to accomplish no less work, and will be sent post free for 3 dollar bills and 50 cts. postage stamps. Single numbers, 30 cts.

RAIT, HENDERSON & Co., Ltd.,

22 ST. ANDREW STREET, HOLBORN CIRCUS, LONDON, ENG.

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PROFS. E. D. COPE, Philadelphia, AND J. S. KINGSLEY, Tufts College, College Hill, Mass.

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. BALDWIN'S "NEW FACTOR IN EVOLUTION." Herbert Nichols, 697 S OF NEW GUINEA (MISCELLANEOUS). (Continued.) ! G. S. Mead. 710 BACTERIAL DISEASES OF PLANTS: A CRITICAL REVIEW OF THE PRESENT STATE OF OUR KNOWLEDGE. Erwin F. Smith. 716 NT LITERATURE-Journey Through Mongolia and Thibet.-Publications of the United States Geological Survey for 1893-4. Fourteenth Annual Report.--A Manual of Topographic Methods.-Mineral Resources of the United States.-An Introduction to the Study of Zoology.-The Cranial Nerves of Batrachia-Structure and Life of Birds. . 731 ENT BOOKS AND PAMPHLETS. ERAL NOTES.

Eneralogy and Crystallography-The Chemical
Composition of Turquoises.-Alstonite and
Barytocalcite.-Rutile, Cassiterite and Zir-
con.-Miscellaneous Notes..
trography-Petrography of the Bearpaw
Mountains, Montana.-Two French Rocks.
-The Granite of the Himalayas.- Califor-

734

nia Rocks.-Gabbro-Gneiss from Russell. -Notes.

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PAGE

741

744

Geology and Paleontology-Fossil Jelly Fishes.
-Is Paleospondylus a Marsipobranch ?-
The Skeleton of Aepyornis.-Geological
News. Mesozoic.-Cenozoic.-General.
Botany-The Teaching of Elementary Botany.
-The Conifers of the Pike's Peak Region.
-Ferns Near Colorado Springs, Colorado. 747
Zoology-Lygosoma (Liolepisma) Laterale in
New Jersey.-On a New Glauconia from
New Mexico.-On the Habits of Keen's
Deer Mouse, Peromyscus keenii (Rhoads).
-The Inheritance of an Acquired Charac-
ter.-The Hartebeest (Alcelaphus). . . 752
Entomology-Fossil Cockroaches.-Dr. Pack-
ard's Monograph of Bombycine Moths.-
Grape Insects.-Flower-Haunting Diptera.
-Larval Habits in Panorpa.

Embryology-The Wrinkling of Frog's Eggs
During Segmentation.

.758

. 737

761

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PHILADELPHIA, U. S. A.

THE EDWARDS & DOCKER CO.,

518 AND 520 MINOR STREET.

red at the Philadelphia Post Office as second-class matter.

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THE FOLLOWING ARE A FEW FACTS AS TO THE WORK

66

OF NATURAL SCIENCE" DURING 1895.

NATURAL SCIENCE for 1895 has published contributions from 104 distinguished writers.

NATURAL SCIENCE for 1895 has published 63 specially contributed Articles in all branches of Zoology, Botany, and Geology, besides the large July number, condensing the results of the Challenger" Expedition.

NATURAL SCIENCE for 1895 has published 24 full-page Plates illustrating the above-mentioned articles.

NATURAL SCIENCE for 1895 has reviewed 100 Books, and noticed 340 Papers, Pamphlets and Periodicals.

NATURAL SCIENCE for 1895 has contained 45 Text-figures. NATURAL SCIENCE for 1895 has given Obituary Notices of 53 men of science, and recorded more briefly the deaths of 77 more. NATURAL SCIENCE for 1895 has announced 210 Appointments. NATURAL SCIENCE for 1895 has given the news of 67 Museums, and of all the leading Societies and Universities.

These statements can be verified by anyone who will buy the Volumes for 1895, which contain 885 large 8vo pages, and are sold for $3.50. Specimen copies, post free, 15 cts.

Apart from the high character of the contents, as shown by the eminence of the contributors, and as testified to by the Scientific and Public Press of all Countries, the above facts show that NATURAL SCIENCE is the Cheapest as well as the Best Scientific Monthly.

NATURAL SCIENCE for 1896 hopes to accomplish no less work, and will be sent post free for 3 dollar bills and 50 cts. postage stamps. Single numbers, 30 cts.

RAIT, HENDERSON & Co., Ltd.,

22 ST. ANDREW STREET, HOLBORN CIRCUS, LONDON, ENG.

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A MONTHLY REVIEW OF

SCIENTIFIC PROGRESS.

THE FOLLOWING ARE A FEW FACTS AS TO THE WORK OF "NATURAL SCIENCE" DURING 1895.

NATURAL SCIENCE for 1895 has published contributions from 104 distinguished writers.

NATURAL SCIENCE for 1895 has published 63 specially contributed Articles in all branches of Zoology, Botany, and Geology,

besides the large July number, condensing the results of the "Challenger" Expedition.

NATURAL SCIENCE for 1895 has published 24 full-page Plates illustrating the above-mentioned articles.

NATURAL SCIENCE for 1895 has reviewed 100 Books, and noticed 340 Papers, Pamphlets and Periodicals.

NATURAL SCIENCE for 1895 has contained 45 Text-figures. NATURAL SCIENCE for 1895 has given Obituary Notices of 53 men of science, and recorded more briefly the deaths of 77 more. NATURAL SCIENCE for 1895 has announced 210 Appointments. NATURAL SCIENCE for 1895 has given the news of 67 Museums, and of all the leading Societies and Universities.

These statements can be verified by anyone who will buy the Volumes for 1895, which contain 885 large 8vo pages, and are sold for $3.50. Specimen copies, post free, 15 cts.

Apart from the high character of the contents, as shown by the eminence of the contributors, and as testified to by the Scientific and Public Press of all Countries, the above facts show that NATURAL SCIENCE is the Cheapest as well as the Best Scientific Monthly.

NATURAL SCIENCE for 1896 hopes to accomplish no less work, and will be sent post free for 3 dollar bills and 50 cts. postage stamps. Single numbers, 30 cts.

RAIT, HENDERSON & Co., Ltd.,

22 ST. ANDREW STREET, HOLBORN CIRCUS, LONDON, ENG.

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