pale yellow and transparent. Chemical and physical 
analyses have not been made. There was some variation 
in the spectral patterns (Plate X NIV) as indicated in 
Type land Type II (Spectra H 823 and H 42A). These 
spectral types from Seattle are similar to those of Types 
I and II from Baja California (Plates XXII and XXIV) 
which indicates possibly that they may be from the same 
source. There are no present suggestions for the botanic 
source from these two localities either from associated 
plant remains or from spectra of modern resins. 
Dominican Republic Amber 
Sanderson and Farr (1960) state that amber was first 
reported from what now is the Dominican Republic by 
Christopher Columbus during his second voyage to the 
West Indies between 1494 and 1496. No further refer- 
ence to Dominican amber during the next 400 years 
appears to have been recorded. In 1905, Sample described 
an amber-bearing formation in the Monte Cristi Range 
(Cordillera Septentrional). Lengweiler (1989) then re- 
ported that fragments of lignite, leaves, and insects, 
such as mosquitos and ants, were found in the amber. 
Sanderson and Farr (1960) indicate that the amber- 
bearing formation in the Dominican Republic are located 
at two principal sites in the Cordillera Septentrional 
north of Santiago between Altamira and Conca. The 
original site is the Pena (Tamboril) region in the two 
gorges of the Arroyo Capancho tributary of the Rio 
Gurado. The second site is below Pico Diego de Ocampo 
in the Palo Alto de la Cumbre region. Sanderson and 
Farr collected the amber in a light brown-dark grey, 
fine-grained, micaceous sandstone occurring below a silty 
shale at this second site. Brower (Sanderson and Farr, 
1960) believes this amber to be Oligocene in age, al- 
though the exact date remains in doubt. The amber 
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