52 MEMOIRS OF THE CARNEGIE MUSEUM 
(ce) Polishing Stones. 
These are extremely numerous and usually consist of pebbles from streams or 
the seashore. They are nearly all of more or less translucent agate and about the 
size of a pigeon’s egg. They were probably used principally for polishing earthenware. 
Several specimens have been figured (see Figs. 19, 21, 22, 44, 45 in the text). 
(f) Various Stone Implements. 
Among the numerous objects excavated by the force employed by Padre 
Velasco at Las Guacas there undoubtedly were a large number of simple tools 
and other worked stones, which, being devoid of any ornamental appearance, were 
again buried or lost. Among those which escaped this fate there are a few 
which are described below. 
(a) (Pl. XXXII, Figs. 1, 2.) Shows two views of a block of pale 
green bowenite, from which celts have been cut. It was found by 
the writer in soil thrown up at Las Guacas. The length is 11 em., 
the breadth 3.9 em. (Cat. No. 2432.) 
(b) (Pl. XXXII, Figs. 3, 4.) Represents a large pebble of bluish- 
green jade from which celt-shaped amulets were cut. Fig. 4 shows” 
one of the sides of the pebble upon which the beginning of a cut 
has been made. Length 11.8 cm., breadth 6.2cm. (Cat. No. 2332.) 
(c) (Pl. XXXII, Fig. 5.) Represents a cylindrical core of gray 
stone, which had been evidently bored out of the block by working 
from both sides, probably for a bannerstone. Length 4.1 em., 
diameter 2.5em. (Cat. No. 223%.) 
(d) (Pl. XXXII, Fig. 6.) Portion of the hollow animal head of 
Fie. 66 Cutting- a metate, showing the eye. Found by the writer in the neighbor- 
Neves 4, hood of Las Guaeas, Compare Pl. XVIII, Fig. 4. Length 12.7 em. 
(Cat. No. 2377.) 
(e) (Pl XXXII, Fig. 7.) Arrow-head of chipped chert. Length 6.7 cm., 
breadth 2em. (Cat. No. 773%.) 
(f) (Pl. XXXII, Fig. 8.) Smoothing or polishing stone. It is of slate, celt- 
shaped, flat, and thin. Length 18.6 cm., breadth 5.9 em. (Cat. No. 244°.) 
(g) (Pl. XXXVI, Figs. 25-26.) Sharpening or polishing tool. An oblong, flat, 
thin piece of black slate, which on both sides shows several longitudinal grooves. 
Length 14.5 em., breadth 6.5 cm., thickness 1.4 em. (Cat. No. 2428 .) 
(h) (Fig. 66.) Thin cutting tool, semilunar in shape, of black slate, with a sharp 
edge. Length 12.5 em., breadth 4.3 cm. 
