1889. | NEW YORK ACADEMY OF SCIENCES. 187 
Mictallie: portion... 600% 66 =< ENS wnat ee dae 30.89 
Pitas PORUION sss. 0m ne oe peels o xnine Bete 2a 69.11 
100.00 
The metallic portion consisted of 
eet Sse he's ssa a2 hens ge ieiaiwiarsid «a's = 90.94 
Mickel) ye. teicce OE oes Gericke tec Gee IICE 9.00 
99.94 
In the stony portion, the following principal constituents 
making up the 69 per cent of matrix were determined: 
SU wat d eee sais Batt vapite ale ors fx 35.61 
UCL eo boca le in ee a 3.45 
1 ULV pees BOR Pete Ee <r Oe ae ave eee 
MAPS hs ee A BL eh heats! scale CU 4 Ee ae's 15.09 
HOS POEMS sins 54a wave these oele eid) StS Majdla Sina 0.25 
Iron (combined) calculated as Fe,0O,, alittle AJ,0,.12.15 
While this analysis is not complete, it serves to show the ma- 
trix to consist (besides the pyrites) of silicates. The metallic 
portion is the usual nickel-iron combination, of which the Caillé 
is perhaps the best type. ‘The silicates, besides olivine, scem to 
have iron as the chief basic constituent. 
In this connection, I will show another meteorite which I 
verbally described before this Academy in 1887. It is from 
Waldron Ridge, 10 miles northeast of Cumberland Gap, Ten- 
nessee. Itweighs twelve pounds, and was found bya prospector 
for iron, who sent it to me for analysis in May, 1887. From the 
same locality, ]ater in the year, a larger piece was also sent me, 
which, by order of the owner, I turned over to Mr. Kunz, and 
which he has described. Itis of the ordinary nickel-iron variety, 
containing— 
Be ee ee as Se évutd Poke ah ASS aKOo 
IST S bE Ode ee On ane a oe ae 6.01 
99.87 
It undoubtedly belongs to the group of meteorites that have 
been found—all with similar characteristics—in Eastern Ten- 
nessee and Virginia, described by Kunz and others. 
Mr. JoHN PatTTeEN then read the paper announced for the 
evening, upon 
THE CAUSE OF THE TIDES, 
illustrated with an extensive series of diagrams, etc. 
