of Bronzes from Machu Picchu, Peru. 



531 



were cut into appropriate sections and examined structurally. 

 The latter are illustrated from drawings in figs. 9 to 29. A 

 general summary of analytical data is given in Table I, and 

 metallographic data, with references to photo-micrographs, in 

 Table II. 



Table I. 



No. 



1 

 2 



3 



4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 

 32 

 33 



Character and Weight of Object. 



Knife, T-form. Weight, 26g 



Spatula- shaped object. Ornam. head, 



bird-form — 



Cloak-pin, star head. 37g 



Ball. 35g 



Ornam. knife. Fisher-boy. 41g 



Chisel. 224g -. 



Knife, T-form. Llama head, 20g 



Axe, broken short below head. 242g 



Thin, flat copper knife, T-form. 22g 



Axe, broken short 1" above edge. 62g 



Cloak pin, pierced flat head. 37g 



Hand mirror. 72g. - 



Tweezers, in process of manufacture. 9g. 



Thin, flat knife, T-form. 21g 



Axe with double-branched head. 41 4g. _ . 

 Chisel, twisted and broken short. 100g._ 



Irregular mass. 286g 



Large, crude needle. 61g 



Tweezers. 3g. 



Large bar. I070g 



Light rectangular piece. 20g. _•-- 



Thin, flat knife, T-form. 



32g. 

 lOg. 

 49g. 



32g. 



Small bar. 



Small rod. 



Irregular wrinkled sheet. 



Thin knife blade. 6g. _ . 



Small silver disc (spangle). 0.77g 



" " ". " 0.96g 



160g. 



Cu 



94.26 



86.03 

 95.99 

 96.90 

 88.08 

 96.20 

 96.79 

 93.70 

 99.73 

 94.41 

 96.38 

 94.35 

 90.05 

 96.26 

 95.63 

 93.90 

 95.68 

 94.69 

 94.69 

 94.52 

 94.42 

 95.35 

 94.70 

 90.09 

 92,55 

 94.52 

 95.03 

 92 06 

 93.21 



91.24 



Sn 



4.82 



13.45 

 3.60 

 2.11 

 9.39 

 3.71 

 3.00 

 5.01 



~5~.12 

 3.92 

 5.34 

 9.72 

 3.67 

 3.99 

 5.53 

 4.20 

 5.16 

 5.53 

 5.45 

 5.96 

 4.22 

 6.60 

 8.99 

 7.14 

 5.12 

 5.12 

 7.30 

 6.90 



99.79 



- Ag 



0.81 

 ~tr~~ 



tr. 

 0.37 



0.68 



tr. 



tr. 



tr. 



0.31 



tr. 

 100. 

 99.5 



Fe 



0.32 



0.87 



0.06 



tr. 



0.23 



tr. 



tr. 

 0.44 



tr. 

 0.29 



0.18 

 0.40 

 0.15 



tr. 



0".20 

 tr. 

 0.13 

 0.20 

 0.29 

 tr. 



0.37 



Zn-0.32 

 Zn-6."l7 



Sb-0.08 



Pb-tr. 



The analyses shown in Table I were made in the Sheffield 

 Chemical Laboratory by Mr. Frank G. Mooney under the super- 

 vision of Professor H. W. Foote. After a preliminary quali- 

 tative examination of each object, the elements indicated were 

 determined quantitatively according to standard methods. 



Some of the bronzes are remarkably pure, aside from small 

 quantities of sulphur in the form of cuprous sulphide. This 



