WARD’S NATURAL SCIENCE BULLETIN. 
5 
Likewise, Models in cut glass of the CELE- 
BRATED DIAMONDS of the world, being 
exact reproductions of fifteen of these beautiful 
historical gems, including the famous Kohinoor 
in its present magnificent condition, as well as 
in the state in which it fell into the hands of 
H. M. ; the Regent or Pitt Diamond, now the 
property of the French Republic, and which it 
was at one time proposed to sell; and the Hope, 
the only blue diamond of note ever found. Also, 
models in glass of all the PRECIOUS STONES, 
faithfully colored and cut in appropriate forms, 
put up in sets of 40, 60 and 84; fac-similes of the 
celebrated Welcome Nugget, the Siberian 
Gold Nugget, now in St. Petersburg, and the 
immense Platinum Nugget, belonging to Count 
Demidoff; Casts of interesting Meteorites, Gonio- 
meters, and all kinds of mineralogical apparatus. 
GEOLOGY. 
In this departmen^we offer an extended series 
of material, illustrating the composition and 
structure of our globe, and of various phenomena 
which have attended its formation, or are still 
present upon its surface. Foremost is the divi- 
sion of 
LITHOLOGY. 
Here is first an immense storehouse of Rocks 
from all parts of the world, and to illustrate 
more definitely, though briefly, the cosmopolitan 
character of our collections, we enumerate a few 
of the more important foreign localities from 
which we have specimens — many obtained dur- 
ing special and extended personal visits by Mr. 
Ward. Among IGNEOUS ROCKS, for example, 
we have varieties from the active volcanic regions 
of Lipari, Sicily, and the country around 
Naples, as well as from the spent volcanic 
districts of Auvergne, the Rhenish Provinces, 
Giant’s Causeway and New Zealand. META- 
MORPHIC ROCKS are contributed from locali- 
ties in British Guiana, Trinidad, Mt. Blanc, 
China, Farther India, away around to the 
Red Sea, and the Valley of the Nile; while 
to the quota of SEDIMENTARY ROCKS, Mex- 
ico, the West Indies, East Indies, Australia, 
Arabia, Algeria, Egypt, Nubia, and countless 
European localities have contributed. These 
rocks are in specimens of uniform size, neatly 
trimmed, with fresh surfaces and well marked 
characters. We have lately prepared with great 
care a number of 
GENERAL COLLECTIONS OF TYPICAL 
ROCKS. 
Three of these are arranged according to mineral 
composition , the importance of which, in the study 
of rocks, is daily becoming more evident, as 
witnessed in the increase of literature pertaining 
to this subject. These three collections consist, 
respectively, of 60, 100 and 275 specimens, differ- 
ing in scope to suit the wants of Union Schools, 
Academies and Colleges. The first of these, the 
UNION SCHOOL COLLECTION, contains the 
most essential rocks, and is furnished packed for 
$ 20 . 
The ACADEMY COLLECTION is more com- 
plete, and its price is $45. 
The COLLEGE COLLECTION is very full 
in varieties and localities, and contains many 
handsome, polished specimens illustrating the 
economical bearing of rock material. This col- 
lection will be furnished for $200. 
MICROSCOPIC SLIDES 
OF THE CELEBRATED 
Knyahinya Meteorite, 
SHOWING THE SO-CALLED 
ORGANIC FORMS 
FOUND BY DR. HAHN. 
These slides have been specially prepared for 
us from material in our possession, by Prof. A. 
A. Julien, and show distinctly the peculiar mark- 
ings which have been considered organic, and 
about which so much controversy has of late 
been raging. They can be obtained mounted, 
ready for the microscope, at $2.00 to $3.00 each. 
We have also specimens, in their natural con- 
dition, of the above and other Meteorites, among 
them the 
Victoria Meteorite, 
found near Cranbourne, Victoria, Australia, 
and the following Meteoric Irons: 
Augusta County, Va. Found in 1858 or 1859. 
Slices of various size, polished and etched, $1.50 
— $2.00 per ounce; turnings, 75 cts. per ounce. 
Bates Co., Missouri. Found in 1875. Slices 
polished and etched, $2.00 per ounce. 
Cohahuila, Mexico. Polished slices, 50 —75 
cts. per ounce; turnings, 30 cts. per ounce. 
Toluca, Mexico. Found in 1784. Slices pol- 
ished and etched, $1.00 — $1.50 per ounce. 
Our saw, run by steam power, is now at work, 
slicing the Cohahuila iron. 
RELIEF MAPS 
of especially interesting geological regions, such 
as Vesuvius, Etna, Mont Blanc, Isle of Palma, 
Auvergne, Colorado Canon, Henry Mountains, 
etc. These maps ai*e exact models of the regions 
represented, made to a definite scale, thus show- 
ing at a glance all the topographical features in 
their correct proportions. Colored as they are 
geologically, they not only show the relations of 
the different formations to each other, but illus- 
trate the structure as well, and show the entire 
dependence of the topography upon them, thus 
proving invaluable aids in the study of physical 
geography as well as geology, and at the same 
time very ornamental and attractive objects in a 
museum. 
The features of structure and erosion are still 
more graphically illustrated by means of a series 
of stereograms, which show the country as it 
would be folded and faulted without erosion. 
GEOLOGICAL MODELS. 
We also have in this department a series of six 
dissecting models in wood, which show more 
clearly than is possible in diagrams the effects of 
erosion, veins, faults, outcrops, etc. Price of set, 
in handsome case, and accompanied with printed 
explanatory catalogue, $20. 
We have just received a considerable invoice 
of Moqui Pottery, from Santa Fe, N. M., con- 
taining many grotesque and interesting forms of 
this peculiar ware, and including also some imi- 
tations of the utensils of civilization. 
Two are arranged stratigraphically , and contain 
100 and 110, respectively, and are accompanied 
by Chart of Geological Time; the former is a 
GENERAL STRATIGRAPHICAL COLLEC- 
TION from all parts of the world, price $50; the 
latter a characteristic series of the 
ROCKS OF THE NEW YORK SYSTEM, the 
types of the Silurian and Devonian in America; 
price, $80. The collections are all neatly mounted 
on black walnut blocks with printed labels. 
PHENOMENAL GEOLOGY. 
We have grouped together a collection of 
75 specimens which illustrate the different phe- 
nomena of Dynamical and Structural Geology, 
such as faults, veins, metamorphism, varieties in 
structure 'and texture, etc., including the wood 
models mentioned below. This is one of the first 
collections a teacher in Geology should have. 
METAMORPHISM. 
A love-smitten Amherst College student thus fer- 
vidly announces the disturbances in his heart’s strata. 
Some busy gnome has been at work 
To rob my mind of peace. 
And changed my heart to pumice-stone, 
That was akin to gneiss. 
It seems to be as tender, now, 
As crumbling mica-slate, 
And its component parts are in 
A strange transition state. 
Your charms are printed on my brain 
In Carboniferous words, 
As plainly as on Hadley rocks 
The tracks of ancient birds ; 
And strata of new feelings, Love, 
Crop out as strong and bold 
As sandstone from the hillside tops, 
Above the rocks of old. 
And through my daily life there run 
The most delightful thoughts— 
As runs a vein of precious ore 
Through cold auriferous quartz. 
And as the secondary rocks 
The primal overlap, 
So this alluvial sentiment 
Is quite distinct from trap ! 
Beneath your gaze I do believe 
Basaltic boulders thrill, 
And that Mount Tom itself would throb 
Obedient to your will. 
So might your glances turn a brick 
To purple Amethyst, 
And change to passion’s willing slave 
A cold geologist. 
The humid rays your eyes emit 
Would warm a stalagmite, 
And their etherial hue outvies 
Prismatic Iolite. 
Then look with favor, as I thus 
Impulsive, break my mind, 
As I would break a block of flint. 
Primeval life to find. 
I have no doubt that love can claim 
Volcanic origin, 
And that th’ arterial fount is where 
Its subtle fires begin. 
Its fervor permeates all my life, 
As lustre does the spar, 
And courses through my tingling veins 
Like fumes of cinnabar. 
Then, prithee, fix the happy time— 
The incandescent hour— 
When coral artists shall arise 
To deck our bridal bower. 
And if some tender aerolites 
Should answer hymen’s knock,' 
We’ll classify the specimens, 
My love, as “ cradle rock,’’ 
