30 
lar, and little can be known about it until it has been laid 
bare The ore is about thirty-five feet thick in the mine. 
It is concretionary or pisolitic and is of very good qual- 
ity. The upper twenty feet is better ore than the lower 
fifteen feet, and the best of all is an inter-bedded seam of 
four to five feet in thickness. An average sample of the 
mine is said by Mr. John H. Hawkins, superintendent of 
the Republic Mining and Manufacturing Company, to 
have about the following analysts: 
Alumina - - - 61.00 
Ferric oxide - - - = 2.20 
Silica — - - - - = 2.10 
Titanic acid - - - = 3.12 
Water (Com. and Hydro.) and loss - 31.58 
100.00 
The “ Dyke or Burst-Up Bank” in its back or deepest 
part is from twenty to twenty-five feet deep. Its ore is 
divided into two irregular seams by an unctuous clay of 
white, blue and mottled colors. On the outcrop the ore 
over the clay is near thirty feet thick, and that under the 
clay has been dug into to a depth of some twenty feet, 
though its full thickness cannot be seen. In the mine 
the ore does not appear to beso thick. The bottom bauxite 
has in it some spots of bauxitic clay and some streaks of 
manganese stain. The general strike is to the northeast 
and southwest, and, in the mine, the dip is near 30° 
toward the northwest. An average sample of the ore of 
this mine is said to have about the following analysis: 
Alumina = = - = 58.21 
Ferric oxide - = = = - 3.60 
Silica - = = = = - 2.90 
Titanic acid - = 3.40 
Water (Com. and Faro) - - 31.89 
100.00 
The “ War-whoop Bank,” in its back or deepest ‘part, is 
some twenty feet deep. The different varieties of ore of 
this mine are known by the commercial names of “ War- 
whoop Ore,” “Bird’s-eye Ore,” “Purple Ore,’ “War- 
whoop Bobo Ore” and “ Hard White Ore.” The “ War- 
whoop Ore” has a putty or dove-colored matrix. The 
“ Bird’s-eye Ore” is the “ War-whoop Ore” with decom- 
posed matrix; it is inferior in alumina and is so thrown 
into the waste dump. The “Purple Ore” is “War- 
whoop ” stained, presumably with manganese; it is also 
thrown over the dump. The “Hard White Ore” has a 
very white matrix; and the “ War-whoop Bobo Ore” is a 
flour-like ore of about the same composition as the “ Hard 
White Ore.” These different ores occur as in the following 
section, made by Mr. R. 8S. Perry, general manager of the 
Southern Bauxite Mining and Manufacturing Company, 
along a straight line across the mines, commencing with 
the top ore: 
Feet. 
(10) “War-whoop Ore,” about - - - - 13 
(9) “ Bird’s-eye Ore,” about - - - - SG) 
(8) “ War-whoop Ore,” about = - - - - 10 
(7) “Purple Ore,” nearly - - - - - 38 
(6) “Clay Horse,” a little over - 3 
(5) “ War-whoop Ore,” with 3 inches of (), nearly - 3 
(4) ‘“‘War-whoop Bobo Ore,” nearly - 3 
(3) “Hard White Ore,” nearly - - - a @ 
(2) “ War-whoop Bobo Ore,” soft, something over 2 
(1) Clay, underbed, white for several feet and then 
mottled. 
The following analyses are given by Mr. R. 8. Perry as 
the average of those made by the consumers of car-load 
samples of the “ War-whoop” and “Hard White” ores of 
the “ War-whoop Bank or Mine.” 
SCIENCE. 
[Vol. XXIII. No. 572 
1. 2. 
Alumina, from - - 57.00 to 62.00 56.00 to 62.00 
Ferric Oxide - - - under 1.00 2.50 to 3.00 
Silica, about - - - - 2.50 5.00 
Titanic Acid - - - 3.00 to 4.00 3.00 to 4.00 
Water, Combined - 29.00 to 30.00 about 30.00 
Moisture, Hydroscopic 2.00 to 4.00 3.00 to 4.00 
(1) The “Hard White Ore.” Average analysis of car 
load samples of between 500 and 1000 long tons. 
(2) The “War-whoop Ore.” Average of consumers’ 
analyses. 
The company contemplates driving a tunnel from near 
the bottom of an adjacent ravine under the ‘“ War-whoop 
Bank or Mine.” This tunnel would drain the ore to a 
depth of some forty feet under the present floor of the 
mine. 
The bauxite mining in America, or in Alabama and 
Georgia, is gradually on the increase, and, unless nipped 
in the bud by unfavorable legislation, Promises to be of 
no little importance. 
A SOUTH AMERICAN LAMPREY. 
BY THEO. GILL, WASHINGTON, D. ¢. 
In September, 1867, a lamprey was found in a street of 
Buenos Ayres and was the cause of much comment, some 
conjecturing it to have fallen from the heavens (!) and 
others that it was transported by a water spout. A valu- 
ation of 15,000 pesos (dollars) was placed on it, and sub- 
sequently it was actually sold for 1,000 pesos. (This was, 
however, in the much depreciated currency-of Argentina. ) 
Later the species was described by Dr. Burmeister as 
Peiromyzon macrostomus. In 1882 I ventured to propose 
for it the generic name Hxomegas. In 1893 it was re-de- 
scribed and figured by Dr. Carlos Berg, the successor of 
Dr. Burmeister, as Geolria macrostomus. Another specimen 
was found near Montevideo in 1890, and on it Dr. Berg’s 
communication was based. The description and figure do 
not, however, entirely agree, and to call attention to such 
discrepancies is the object of this note. It is to be hoped 
that Dr Berg will further examine the specimen and eluc- 
idate the doubtful points. 
From Dr. Berg’s illustration, it is evident that the lam- 
prey is not 2 Geotria and that the genus H:comegas based 
ou it is perfectly valid. It is not clear, however, what is 
the character of the annular cartilage, and, from the figure, 
one might even be excused for thinking it might not 
be developed. Such want, however, is very improbable.' 
If there should really be no annular cartilage the lam- 
prey so distinguished would have to be referred to an 
independent family at least. 
Dr. Berg says: “ Lamina mazillaris angusta lobults quat- 
tuor valde huiiilibus fere inermis instructa,” but not the 
slightest indication of such a corneous lamina is given in 
the accompanying plate. Only four concentric (not at all 
diverging) rows of conic teeth are represented as arming 
the upper half of the oral disk, and one row of numerous 
(24) teeth is delineated in a marginal lower row. Is 
there really an upper or suproral lamina, and can the 
lower teeth possibly be developed from tubercles of the 
annular cartilage? Dr. Berg says: “Lamina mandibularis 
humilissima mutica.” Let us hope that Dr. Berg will dis- 
sect the subject sufficiently to inform us, and give us a 
better illustration. Hither the figure of Dr. Berg’s me- 
moir is quite inaccurate, or the species deviates remarka- 
bly from all other Petromyzonids in dental arrangement. 
I may add that in common with all others of late years, I 
have adopted for the family the name Petromyzontide, for 
which Professor Agassiz (1850) was responsible. The 
proper form of the name is Petromyzonide. 
1The shape of the mouth sufficiently indicates the existence of an annular 
cartilage. 
