1883,] 281 
A memoir on the “Course and growth of the fibro-vascu- 
lar bundles in Palms,’ by J. C. Branner, was read by the 
Secretary. 
Dr. Frazer exhibited a map of Radnor township and the 
adjoining districts of Delaware and Chester counties, on which 
he had delineated the Sienite belt and the outcrops of Serpen- 
tine, the stratigraphical relationships of which he discussed, 
dissenting from Mr. Rand’s theory of their echelon structure 
and exogenous origin. 
A communication was read from Mr. Hillborn T’. Cresson, 
of the Academy of Natural Sciences of Philadelphia, respect- 
ing the minutes of March 15, 1883, Proceedings of American 
Philosophical Society, pages 648, 649, 
“‘The statement that the instruments in question were studied by Mr. 
Cox isa mistake. The gentleman above named (Mr. Cox) was employed 
by me as a professional musician to verify and illustrate, with the Boehm 
flute, the points of a.lecture upon Aztec music, delivered by me, before 
the Academy of Natural Sciences of Philadelphia during their seance of 
April 17th, 1888, having previously furnished him with a score showing 
all the notes, fingering and stoppings necessary, and by reference to 
which he so manipulated the instrument in question that, upon the Mexi- 
can flutes or flageolets the entire chromatic scale was obtained ; and upon 
those instruments denominated by me pitch-pipes or whistles (made of 
like material) an octave was obtained ; also, a ninth, eleventh and twelfth, 
the tenth note being missing (or the instrument made to produce it lost, 
or otherwise destroyed, and it will rest with musical experts to determine 
whether this note really existed). It is due Mr. Cox to state, that I men- 
tioned him in my pamphlet entitled ‘Aztec Music,’ on account of the val- 
uable hints he gave me in regard to modern music, formation of orches- 
tras, &c., as my musical knowledge is limited. It was simply my inten- 
tion, as an archeologist, to call the attention of musical experts to facts 
first observed by me while arranging certain collections of antiquities in 
France and Italy, trusting that they might be of interest, and serve to 
aid investigations in this branch of ethnology, about which little is known 
at present. It is necessary to make a distinction between the two kinds 
of instruments borrowed by me from your Society, as they are entirely 
different in construction and character, viz.: four-holed flutes, made of 
baked clay or terra-cotta, and those instruments of like material, which I 
have denominated ‘pitch-pipes,’ both kinds of which instruments are of 
Mexican origin. I beg leave to ask that, at your next stated meeting, 
PROC. AMER, PHILOS. S00. xxx. 114. 25. PRINTED DECEMBER 1, 1883. 
