( 99 ) 
By Article VI. — Suspected ships shall be dealt with as follows : — 
(a.) The passengers and crew subjected to surveillance during a 
period which shall not exceed six days in the case of Yellow fever. 
The period to date from the arrival of the ship. 
(6.) That measures should be taken to secure the destruction of 
mosquitoes and their larvae on board. When such measures as the 
Health Officer may have deemed necessary in accordance with the 
provisions of this article have been carried out, such ship shall 
immediately thereupon be admitted to free pratique. 
By Article VII. — Healthy ships shall be admitted to free pratique 
immediately on arrival, irrespective of the nature of their bill of health. 
They may, however, at the discretion of the Health Officer, be subjected to 
the measures specified in paragraph (/.) Article V., and the passengers 
and crew may be subjected to surveillance during a period of six days in 
the case of Yellow fever. The period of surveillance shall date from the 
departure of the ship from the infected place. 
By Article X. — A ship shall not be regarded as having called at a 
place if it has merely disembarked passengers and their baggage, or mails, 
without having been in communication with the shore. 
Ships from an infected place which have been disinfected shall not 
again be subjected to sanitary measures on their arrival in another port 
if in the opinion of the Health Officer of such ports the measures applied 
were effective, unless a fresh case of infectious or contagious disease has 
occurred on board since disinfection, or unless they have again called at an 
infected place. 
By Article XII. — Where measures of observation or surveillance are 
prescribed the Health Officer may exempt from their application any 
person who is, in his opinion, immune to the infectious or contagious 
disease on account of which these measures are applied. 
By Article XIII. — Where these Regulations provide that a person 
may be permitted to proceed to his place of destination subject to 
surveillance, the Health Officer, before granting such permission, must be 
satisfied that it is reasonably probable, that the person to whom it is granted 
will duly comply with the conditions of surveillance, and permission, if 
granted, shall be upon the following conditions : — 
(a.) He must satisfy the Health Officer as to his name, intended 
place of destination, and his place of residence thereat. 
(/).) He must agree to present himself and shall present himself 
for medical supervision during the prescribed period, and he may be 
required by the Health Officer to deposit a sum not exceeding two 
pounds, which may be forfeited if he fail to so present himself. 
(c.) The place must, in the opinion of the Health Officer, be 
conveniently situated for the medical supervision. 
If the Health Officer is not satisfied as herein required, or ifthe person 
fails to comply with paragraphs (a) and ( b ) hereof, the Health Officer may 
detain him under observation, or direct him to proceed to a specified 
place, and there remain under medical supervision during the prescribed 
period. 
In the latter case, the provisions of paragraph ( b ) hereof may at the 
discretion of the Health Officer be applied to such person. 
In the case of a healthy ship the measure authorised by the loregoing 
proviso must not be applied to passengers who have not embarked or gone 
ashore at the infected place, and it should not be applied to those passengers 
who embarked or went ashore at the infected place it the circumstances of 
their stay there afford reasonable evidence of their non-infection. 
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