55 
Table 1. —Period of incubation in yellow fever, etc. —Continued. 
[Reed, Carroll, and Agramonte: “ The etiology of yellow fever; an additional note,” Journ. Am. 
Med. Assoc., Feb. 16, 1901.] 
Case No.— 
Bitten. 
Attack. 
Incubation. 
15 (1)..... 
Dec. 5, 2 p. m. 
Dec. 8,11.30 p. m_ 
3 days 9) hours. 
16 (3).... 
Dec. 8, 4 p. m .. 
Dec. 14, 9 a. m_ 
4 days 20 hours, took to bed; 5 days 
17 hours, onset of fever. 
17 (4)- 
Dec. 9,10.30 a. m_ 
Dec. 12, 9.30 p. m_ 
3 days 11 hours (about). 
18 (5)_ 
Dec. 11, 4.30 p. m_ 
Bitten several 
times—Dec. 21, 
noon, and Dec. 22, 
4.30 p. m. 
Dec. 15, noon_ 
3 days 19) hours (bed). 
2 days 194 hours since shortest, and 
4 days since longest exposure. 
19 (7).... 
Dec. 25, noon. 
20 (6)- 
Dec. 30,11 a. m. 
Jan. 3,10.30 a. m_ 
3 days 22)- hours. 
[Reed: “Experimental yellow fever,” Am. Med., July 6,1901.] 
Case No.— 
Bitten. 
Attack. 
Incubation. 
21 ___ 
22_ 
24_ 
Jan. 19, 3.30 p. m. 
Jan. 31, 9.30 a. m_ 
Jan. 6,11 a. m_ 
Jan.7, 2p.m.... 
Jan.23, 3 p. m.. 
Feb.-3, noon_ 
Feb. 9, 5 p. m.. 
Feb. 10, noon... 
3 days 23) hours. 
3 days 2) hours. 
3 days 6 hours. 
2 days 22 hours. 
[Reed and Carroll: “Etiology of yellow fever; a supplemental note,” Am. Med., Feb. 22,1902.] 
Case No.— 
Bitten. 
Attack. 
Incubation. 
25 (1). 
26(2).- 
Sept. 16, 4 p. m... 
Oct. 9, 4 p. m... 
Sept. 19, 4.30 p. m_ 
Oct. 13, midnight_ 
3 days ,) hour. 
3 days 8 hours (about). 
[Guiteras: Revista de Med. Trop., vol. 2, No. 10,1900-1901.] 
Case No.— 
Bitten. 
Attack. 
Incubation. 
27 (2). 
Feb. 23, 2.45 p. m_ 
Feb. 26, (?) p. m. 
3 days 10 hours (about). 
28 (30) .. 
Aug. 8,8.30 p. m. 
Aug. 12, (?) p. m_ 
4 days 5 hours. 
29 (31). 
Aug. 8,9.30 p. m_ 
Aug. 11, (?) p. m_ 
3 days 3 hours. 
30(33) .. 
Aug. 9,9 a. m_ 
Aug. 14, (?) p. m_ 
5 days 3 hours. 
31 (37)_ 
Aug. 13,1.45 p. m_ 
Aug. 17, (?) 8.45p. m_ . 
3 days 19 hours. 
32(39) ... 
Aug. 14, 9 a. m_ 
Aug. 18, (?) 6 a. m_ 
3 days 21 hours. 
33 (40)_ 
Aug. 14,10.15 a. m_ 
Aug. 20, forenoon.... 
5 days 21 hours (about). 
34 (41). 
Aug. 22, 4.30 p. m_ 
Aug. 25, (?) 4.30p. m.. 
3 days. 
[Parker, Beyer, and Pothier: “A study of the etiology of yellow fever,” Yellow Fever Institute, 
Bull. No. 13, March, 1903.] 
Case No.— 
Bitten. 
Attack. 
Incubation. 
35_ 
Sept. 4, 9.30 a. m_ 
Sept. 7, (?) a. m.. 
3 days 2 hours (about). 
[Marchoux, Salimbeni, and Simond: “La fievre jaune,” Rapport de la Mission Francaise, Institut 
Pasteur, Annales, November, 1903.] 
Case No. — 
Bitten. 
Attack. 
Incubation. 
36 (2).._. 
3 days 18 hours. 
3 days 22 hours. 
5 days 22 hours. 
7 days 5 hours. 
37 (17 )a _ 
38 (20)_ 
39 (22 ) b 
«Before being bitten by infected mosquitoes patient had received injections of blood from 
yellow fever cases to induce immunity : 5 cc. blood twelve days old; followed fifteen days later 
by same quantity eight days old. • 
b This man previously had been given 20cc. serum taken on the eighth day and passed through a 
Berkefeld filter; six days later 20 cc. of same serum not filtered ; subsequentlv bitten by infected 
mosquitoes. The serum injections may have induced a partial immunity, which delayed the 
onset and modified the disease, for he had a mild attack. 
