Date of
inoculation

Fowl
No.

Inoculum

Result and remarks

7-3-40

2831

Passage 19, embryo emulsion
Berkefeld V filtrate

Died 5th day

2830

Passage 19, embryo emulsion
Berkefeld V unfiltered

Died 9th day

2-5-40

2279

Passage 33, embryo emulsion

Lived, tested immunity 16
May 1940, remained well

6-5-40

2290

Passage 36, fresh embryo
emulsion

Lived, tested immunity 23
May 1940, remained well

23-5-40

2285

Passage 41, fresh embryo
emulsion

Lived, tested immunity 7
June 1940, remained well

23-5-40

2286

Passage 41, fresh embryo
emulsion.

Remained well, killed 5th day,
spleen sub-inoculated into a
healthy fowl which also re-
mained well, and proved
immune against fowl virus
test

27-5-40

2335

Passage 41, incubated 72
hours 37 °C. and 24 hours at
0°C.

Remained well, tested immunity
11 June 1940. Survived

24-6-40

2253

Passage 48, embryo emulsion

Remained well, tested immunity
9 July 1940. Survived

10-7-40

2336

Passage 48, refrigerated 7
days

Killed owing to fowl pox infec-
tion

2338

2339

2341

10-7-40

2387

Passage 50, embryo emulsion

Remained well, tested immunity
25 July, 1940. Survived

2388

Passage 50, embryo emulsion

Died 8th day, other causes

22-7-40

2402

Passage 51, embryo emulsion

Remained well, tested immunity
5 August 1940. Survived

22-7-40

2404

Ditto . . .

Ditto

26-8-40

2515

Passage 56, embryo emulsion

Remained well, tested immunity
12 September 1940. Im-
mune

26-8-40

2516

Ditto . . .

Ditto

26-8-40

2517

Ditto . . .

Ditto

26-8-40

2518

Ditto . . .

Ditto

26-8 40

2519

Ditto . . .

Ditto

26-8-40

2520

Ditto . . .

Ditto

26-8-40

2521

Ditto . . .

Ditto

26-8-40

2522

Ditto . . .

Died 7th day but no lesions of
Newcastle disease

26-8-40

2523

Ditto . . .

Remained well, tested immunity
12 September 1940. Immune

26-8-40

2524

Ditto . . .

Died 10th day but no lesions of
Newcastle disease