Show london takes precautions london sept 3 the port sanitary authorities are adopting necessary fes to deal with tho possible invasion of cholera A largo medical staff has apen detailed to examine all vessels entering tho thames no alarm has as yet been manifested in england but some newspapers are calling on the government to take measures for exclusion of tho russian emigrants mexico city sept 3 the superior board of health reports now only four cases of fever in the country and has tear of the breaking out of cholera here through arrivals from hamburg |