18                                     Surra.

Body weight
in lbs.

May 20th

... 0.5 gms. of Orp.

Tryps.

absent.

... ...

„ 22nd

... 50 c.c. of 4% Atoxyl

... ...

„ 24th

... 0.5 gms. of Orp.

... ...

„ 26th

... 50 c.c. of 4% Atoxyl

... ...

„ 28th

... 0.5 gms. of Orp.

... ...

„ 30th

... 50 c.c. of 4% Atoxyl

340

June 1st

... 0.5 gms. of Orp.

340

„ 3rd

... 50 c.c of 4% Atoxyl

336

„ 5th

... 0.5 gms. of Orp

336

Aug . 31st

... ... ...

377

                        GUINEA-PIG NO. 235.

Body weight
in grammes.

April 16th

... Inoculated with Surra

... ...

...

May 1st

... ... .. Tryps. appeared in blood

700

„ 2nd

... 15 c.c. of 1% Atoxyl

„ present.

700

„ 4th

... 9 mgms. of Orp.

„ absent.

650

„ 6th

... 1.5 c.c. of 1% Atoxyl

„ „

660

„ 8th

... 13.5 mgms. of Orp.

„ „

660

„ 10th

1.5 c.c. of 1% Atoxyl

„ „

610

„ 12th

9 mgms. of Orp.

„ „

650

„ 14th

... 1.5 c.c. of 1% Atoxyl

„ „

640

„ 16th

... 9 mgms of Orp

„ „

610

„ 18th

1.5 c.c of 1% Atoxyl

„ „

580

„ 20th

... 9 mgms. of Orp.

„ „

590

Aug. 31st

... ... ...

„ „

750

                        GUINEA-PIG NO. 263.

Body weight
in grammes.

May 12th

... Inoculated with Surra

... ...

...

„ 23rd

... .... Tryps. appeared in blood

360

„ 23rd

... 1.5 c.c. of 1% Atoxyl

.....

360

„ 25th

... 1.5 c.c. of 1% Atoxyl

„ absent.

340

„ 27th

... 9 mgms. of Orp.

„ „

360

„ 29th

... 1.5 c.c. of 1% Atoxyl

„ „

370

„ 31st

... 9 mgms. of Orp.

„ „

370

June 6th

... 1.5 c.c of 1% Atoxyl

„ „

340

Aug. 31st

... ... ..

„ „

680

This guinea-pig received only four doses of atoxyl and
two of orpiment. The treatment was discontinued, as the
animal was dull and off feed. The result has been equally
good as in the cases where the full treatment was given.