Norwich bulletin., 1921-06-01
GEOLOGICAL SURVEY HAS
 STUDIED STATES WATER SUPPLY

The ninth biennial report of the state reoIor;cal and natural history survey has been published and copies may be obtained from George S. Goddard, state librarian. It describes the organization and aims of the Survey, the work accom- plished. work in progress, and plans for future work.
 During the past two years study of the water resources especially of un- derground supplies domestic as well as public use, of tne shore towns, has been completed. A special study was made of the ground water of more re- stricted region bordering the Sound for the purpose of determining to what eX- tent salt water affects the quality of do- nestle supplies These studies, like the similar ones made elsewhere in the state were carried out in cooperation with the United States Geological Survey.
 Studies have been completed of the water resources of 75 towns, which com prise over one-third the area of the state and contain over one-half the total pop ulation. During the past year water supply raper 470, ground water in the Sorwalk. Suffield, and Glastonbury areas, hy Harold s. Palmer was issued by the United States geological survey and may he obtained by writing to The Director, Washington, D. C. The towns included | in this report are Darien, New Canaan, NorwaK Ridgefeld. Weston. Westport, | Wilton, East Granby. Enfield, Suffield, Windsor Locks, Glastonbury and Marl- boro.
 | The Survey has published three new bulletins two of these deal with geo. logic subjects, the third deals with in- sects
 In Bulletin g. "The Quaternary Geo i logy of the Nev Haven Region, Connec- ticue," by Freeman Ward, Ph. D., will be found an interesting description of the glacial geology as recorded in the gravels, sands, and clays, of an area comprising most of the region covered by the New Haven sheet of the United States topograp aphic atlas. The report is well illustrated and the distribution oi the different formations and the depth i to the underlying red sandstone. or bed rock. are shown on two large maps 1 Bulletin 30, Drainage Notifications and Glaciation in the Danbury Region l Connecticut" by Ruth s. Harvey, Ph D. describes the changes brought about ir the courses of the Housatoni Still, an( ! Rocky rivers as a result of the deposits laid down by the Great Ice Sheet in its final retreat northward. The regior studied covers about 150 square miles extending from the vicinity of New Mil e and westward to the state line It vii surprise many people, no doubt, to learr that some of the streams in the Danbury region had their courses notably changeC by the glacial deposits in fact tn, changes that took place there furnish clue 10 many Of the anomalies in tn courses of streams elsewhere in the stat which resulted from the same cause.
 Bulletin 3l Is 'Check-List of the In sects of Connecticut" by Dr. W. E. Brit ton state entomologist. There are list Cd 6,7Sl species and varieties all O
 which are known to occur within tn
 boundaries of the state and are repre- sented by specimens or reliable records The purpose of this bulletin is to stimu
 late an interest in the collection aui lstudy of the insects of the state and t serve as a check catalogue of the specie
 in the collections of institutions an
 amateur collectors.
 In addition the survey has aIread,
 published a number of interesting an
 authoritative reports on the geology
 botany. and zoology of the state A com
 plete list of these bulletins. as well q |, copies of the above described report,
 may he obtained by those interested fror
 George $, Goddard, state librarian. Hart
 ford, who is the distribution and ex
 change agent of the survey. pr, H. H
 Robinson, the superintendent will aIs
 be glad to answer any inquiries in re
 gard to publications or other ma tter which may be addressed to him at Ne, Haven.