290 THE INDIAN JOURNAL OF VETERINARY SCIENCE AND ANIMAL HUSBANDRY [ IV, III.

                                                            TABLE XII.

                        Data on 13 dogs with incubation period of 30 days or more.

Dog.

Exposed.

Virus.

Method.

Dose (c.c).

Died.

Days.

18

20th November 1928

27993

Intramuscular

1.0

21st December 1928

31

25

20th November 1928

27993

Intravenous

0.25

20th December 1928

30

33

20th November 1928

27993

Intraperitoneal

0.25

6th January 1929 .

47

21

20th November 1928

27993

Intravenous

1.0

30th December 1928

40

95

20th November 1928

27993

Intravenous

0.5

29th December 1928

39

108

20th November 1928

27993

Intramuscular

0.25

30th December 1928

40

81

18th April 1929

29995

Dog bite

..

30th June 1929

73

239

19th April 1929

29952

Subarachnoid

0.25

13th June 1929

55

240

19th April 1929

27039*

Subarachnoid

1.0

8th July 1929

80

307

17th November 1931

B71

Intramuscular

1.0

8th January 1932 .

52

357

20th July 1932

B88

Subarachnoid

0.2

24th August 1932 .

35

232

22nd September 1932

58982

Subarachnoid

0.2

3rd May 1933 .

223

262

2nd November 1932

58982

Subarachnoid

0.2

5th December 1932

33

                                                        * Submaxillary gland extract.

                                                       TABLE XIII.

                              Data on rabbits with prolonged incubation periods.

Rabbit.

Exposed.

Virus.

Method.

Dose (c.c.).

Died.

Days.

7190

20th November 1928

27993

Intraocular

0.25

14 th February 1929

86

7198

22nd November 1928

27993

Subdural .

0.25

29th December 1928

37

7288

28th December 1928

27993

Subdural .

0.25

22nd July 1929

206

7290

28th December 1928

27993

Subdural .

0.25

3rd February 1929

37

7594

15th March 1929 .

29870

Subdural .

0.25

31st Way 1929

77

8294

20th November 1929

33795

Subdural .

0.25

29th December 1929

39

10499

17th November l931

50012

Subdural .

0.20

22nd January 1932 .

66

10503

17th November 1932

50012

Subdural .

0.20

16th February 1932

91

10996

15th April 1932

1850EE

Subdural .

0.25

13th June 1932

59

12193

5th May 1933

58982D232

Subdural .

0.25

24 th July 1933

80

A few dogs in both the vaccinated and control groups have resisted numerous
exposures. It seems that if a dead virus will successfully immunize against rabies,
a stronger resistance should exist in dogs which have survived successive exposures
to a living virus.

Quite frequently cases of rabies have been reported in vaccinated dogs which
were exposed to the bite of a rabid dog previous to vaccination, but very little
data have been furnished on dogs which have been exposed to natural infection
subsequent to vaccination.