SECRETARY’S REPORT 67 
with increased efficiency. The program includes intensive research in 
dendrochronology, radiocarbon-14 dating, pollen analysis, geologic- 
climatic dating, typological analyses of artifact materials, historical 
documentation, and the several subsidiary techniques applicable to 
chronology. Ultimately the program should provide a specific time 
scale into which each of the culture complexes represented in the 
excavated sites can be fitted with pinpoint accuracy. In the second 
half of the fiscal year the Missouri Basin Chronology Program made 
several significant accomplishments. A large wall chart and map 
were prepared, showing temporal position and geographic location of 
all of the archeologically pertinent carbon-14 dates so far available. 
A series of 11 radiocarbon-14 specimens were submitted to the Univer- 
sity of Michigan for dating. The available dendrochronological ma- 
terials on hand in the Missouri Basin were analyzed, and a determina- 
tion was made of what further material is needed. Plans were also 
made for procuring additional dendrochronological specimens upon 
which a series of local master plots can be built. Pollen samples from 
ancient bog areas were collected and submitted to Oberlin College for 
analyses, and plans were made for further collecting of fossil pollens. 
A man with geological training was temporarily added to the staff 
to work out a terrace-system sequence along a portion of the Missouri 
River, and a series of specimens was submitted to the University of 
Michigan proportional counter laboratory for analyses. Representa- 
tives from several State institutions are also cooperating in the 
program. 
The laboratory and office staff devoted its time to processing specimen 
materials for study, photographing specimens, preparing specimen 
records, and typing and filing of records and manuscript materials. 
The accomplishments of the laboratory and office staff are listed in 
the following tables. 
TABLE 1.—Specimens processed July 1, 1957—June 80, 1958 
Number Catalog Number of 
Reservoir of sites numbers | specimens 
assigned processed 
Prrmboncen to. Ser tiny. Lance le Cs LT 34 8, 290 52, 718 
SHG MENS. Set. t tut) inl ee tele tes ee 13 5, 417 38, 864 
LIOPROD UCL 2 A eS ene a 29 901 1, 304 
SILes; not, in TeservOrs-<- = 2 bose eS 5 23 212 
81 14, 631 93, 098 
Collections not assigned site numbers-_--_- 2 9 9 
Bo) 2 = Oe pe ee eR 83 14, 640 93, 107 
