( lOl ) 
Suspected Ship. — This also differs. In the case of Yellow fever the 
ship which is regarded as suspected by the West Indian Convention 
would be classed as infected by the Pan-American. By the latter 
authority a suspected ship is one on which, although no case of Yellow 
fever has occurred at any time during the voyage, nevertheless has lain 
in such proximity to an infected shore as to render it liable to the access 
of mosquitoes. ( Vide Article XX.) 
Healthy Ship. — By Article XX. of the Pan-American Convention 
it is only when a ship has had no case of Yellow fever during the 
voyage, and has not lain in such proximity to the shore as to render it 
liable to mosquito infection, that it is declared “ Indemne'.' 
Observation , Surveillance. — Both Conventions agree upon the absolute 
necessity of proper observation stations and isolation stations. There 
does not appear to be anything in the Pan-American Convention dealing 
with surveillance. I think that the question of surveillance should be 
favourably considered under certain circumstances. 
Observation,” the definition of the term is similar in both 
Conventions. 
When a place ceases to be infected. — Here there are also substantial 
differences. By the West Indian Convention there should not have been 
a new case of Yellow fever within six days. By the Pan-American not until 
eighteen days after isolation , death, or cure. Both agree that anti-mosquito 
measures must have been adopted. 
How infected ships are to be treated. — With regard to the treatment of 
the sick both agree that they are to be removed at once. But the Pan- 
American Convention is very precise upon how the Yellow fever patients 
are to be isolated and removed. These very important instructions are 
omitted in the West Indian Conference. With regard to the other 
passengers, both Conventions agree that the passengers should land 
and be kept under observation (in quarantine) for a period of six days. 
The Pan-American Convention indicates how the observation station is to 
be protected. The West Indian Convention also allows a period of six 
days’ surveillance. 
Place where the infected ship is to be moored. — The Pan-American Con- 
vention lays down that ships must be moored at least 200 metres from the 
inhabited shore. In the West Indian there is no mention of this. 
The fumigation of the infected ship. — Both agree that this must 
be done. 
Suspected Ships. — As there are differences in the definition of 
suspected ships as regards Yellow fever, in the case of the two 
Conventions, strict comparison cannot be made. Were, however, the 
definition the same in the Pan-American Convention, the treatment would 
nearly coincide in the two cases, except that six days’ surveillance is 
substituted for six days’ observation by the West Indian Conference. 
Healthy Ships. — Here there is a difference. By the West Indian 
Conference the ship is admitted to free pratique immediately, irrespective 
of the nature of the bill of health, and discretionary powers are given the 
Health Officers to fumigate and to exercise surveillance of passengers 
and crew. By the Pan-American Convention the trip must have 
exceeded six days, and the ship must have been medically inspected 
before departure. 
Ships which have “ called ” at intermediate points. — Article X. of the 
West Indian Conference and Article XXXII. of the Pan-Anerican agree 
that vessels are not regarded as having called at a place if they had 
not been in communication with the shore. (See Article XXXII.) and 
only disembarked passengers, baggage and mails. 
