38 SEWAGE-POLLUTED OYSTERS AS CAUSE OF TYPHOID. 



Oysters from Jamaica Bay. 



No. 



1 



Sept. 28 

 Sept. 29 



2.. . 



3 



4 



do 



5 



Oct. 9 



6 



...do 



/ 



...do 



8 



...do 



9 



do 



10 



Oct. 10 



11 



Oct. 11 



12 



do 



13 



...do... 



14 



Oct. 12 



15 



...do 



16 



...do 



17 



...do 



18 



...do 



19 



...do 



20 



...do 



21 



...do... 



22 



do.. 



23... 



do 



24 



...do 



25 



.do 



26 



...do 



27 



...do 



28 



...do 



29 



...do 



30 



...do 



31 



...do 



32 



...do 



33 



...do 



34 



...do 



35 



...do 



36. 



do 



36a 



Nov. 20 



36b 



...do.. 



36c 



...do 



36d 



Nov. 22 

 ...do 



36e 



36f.. 



do 



37 



Nov. 24 

 ...do 



38 



39 



...do 



40 



...do 



41 



-do .. 



42 



...do 



43 



...do 



44.. 



-do 



45 



Dec. 15 

 ...do 



46 



47 



...do 



48 



...do 



49 



...do 



50 



...do 



Date. 



B. coli determinations (each 

 score based on 5 oysters). 



0.1 cc. 



Total 



score 



(points). 



140 

 230 

 230 

 140 

 140 

 230 

 140 

 140 

 50 

 410 

 230 

 140 

 230 

 320 

 140 

 320 

 320 

 410 

 320 

 230 

 410 

 410 

 50 

 140 

 50 

 320 

 410 

 500 

 500 

 3S0 

 230 

 320 

 320 

 320 

 410 

 230 

 41 

 50 

 140 

 140 

 140 

 230 

 32 

 23 

 32 

 230 

 50 

 23 

 32 

 41 

 23 

 41 

 140 

 140 

 41 

 50 



Organisms per cu- 

 bic centimeter, 

 plain agar, at— 



25° C. 



15,000 



11,000 



7,000 



450, 000 

 320,000 



11,000 



19, 000 



8,000 



25,000 



8,000 



95,000 



6,000 



7,000 



42,000 



14,000 



61,000 



4,000 



14,000 



8,000 



4,700 



4,100 



13,000 



5,000 



6,000 



9,000 



7,000 



250, 000 



110,000 



700,000 



1,000 



16,000 



19,000 



250,000 



1,200 



2,000 



3,000 



20,000 



33,000 



50,000 



60,000 



30, 000 



100, 000 



9,000 



50,000 



50, 000 



700,000 



270, 000 



37° C. 



J 5,000 

 6,000 

 5,000 



140,000 

 110,000 



,000 



2,600 

 3,400 

 5,500 

 3,200 

 6,700 

 1,000 

 4,700 

 7,600 

 2,500 

 6,000 

 3,000 



20,000 

 7,000 

 2,600 

 3,800 

 9,000 

 3,000 

 2,700 

 5,000 

 4,000 



40,000 



50.000 



500, 000 



5,000 



47,000 

 6,000 



40,000 

 1.100 



i;ooo 



5,000 



8,000 



25, 000 



20,000 



52,000 



20,000 



2,000 



5,000 



400 



300 



120, 000 



50,000 



Note. — Xo. 1 collected from Silver Hole, near Broad Channel, Jamaica Bay, N. Y., by Dr. Stiles. Nos. 

 2, 3, and 4 taken from Fulton Market, New York; said to have been 1 day out of water. Nos. 5, 6, 7, 8, 

 and 9 from dealer. New York City; probablj- 2 day^ out of water. No. 10 from market, New York; 

 unfioated. Nos. 11, 12, and 13 froni dealer, New York. Nos. 14 to 36, inclusive, from seized lot; all floated 

 near Inwood. Nos. 37 to 44, inclusive, collected by Inspector Holton from Silver Hole, near Broad 

 Channel. Nos. 45 to 50, inclusive, from dealer; floated at head of Indian Creek, near Canarsie, L. I. 



