XV -REPORT UPON THK WATER SUPPLY OF THE FISH COM- 

 MISSION STATION AT WOOD'S HULL, MASSACHUSETTS. 



By Dr. J. H. Kiddek. 



The station occupies a narrow strip of shore line, extending from the 

 property of the Pacific Guano Company on the west to the bej^innins' of 

 the village of Wood's Holl on the east, and situated ni)on the southerly 

 side of the tongue of land which separates the waters of Buzzard's Bay 

 on the north from those of Great Harbor (an inlet of Vineyard Sound) 

 upon the south. This tongue of land or isthmus, which is called by the 

 local name of " Bar Xeck," has always been badly ofi' for fresh water, 

 its few inhabitants getting their supply from rain Avatcr collected in 

 cisterns and from shallow wells, witli the single exception of ai large 

 spring U])on nearly tlie highest part of the ¥eck, owucmI ])artly by Mr. 

 C. E. Davis and i)artly by the Tacilic Guano Comi)any. This spring or 

 well stands ordinarily at a height of about 4 feet above mean low- water 

 mark, and has thus far snfliced for the considerable needs of the Pacific 

 Guano Company, which draws water from it l)y underground ])ipes, and 

 for the supply of the neighborhood in times of drought. Water from 

 this S]mng, sent to me for examination at Wasliington in A])ri1 of this 

 year, was found to be potable and of good quality. 



The analysis resulted as follows : 



Water liltered before analysis : Grains per 



iniperiiil giiUlou. 



Total solids 11 



Of which chlorides (estimated as NaCl) 4. 62 



Loss on ignition (blackening slightly) ;{. 00 



Not estimated (carbonates, &c.) '^.'.)S 



11.00 



By Nessler reaction: t^HlS' 



Free aiaraonia 0.01(5 



Albuminoid ammonia 0. OOG 



The sediment contains nnicellnlar algaj, rotifers, paramaeium, amccba, and woody 

 liber. No evidence of imjnirity iiijurions to health. 



The formation tliroughout this part of Cape Cod is drift, i)resenting 

 no evidence of geological structure this side of "Ko<!k" staticui, on 

 the Old Colony Kailroad, 32 miles to the northeast, and quite olf the 

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