water guns hose Berliners on border . U.S troops threatened in a second incident . East German police to-day shot streams of water at west Berliners standing within 100 yds of the border , on the western side , west Berlin police reported . the East German interior ministry on Tuesday told west Berliners to keep 100 yds from the borders . the western commandants , ordering allied troops up to the border yesterday , described this as effrontery . in another incident , an East German police officer to-day called on American soldiers standing just behind the sector border demarcation line to withdraw , and when the Americans did not move a water cannon lorry drove up on the east Berlin side , a West German news agency reported . but after a while the water hose was withdrawn with the Americans still in position . east Berlin police last night threw several tear gas grenades into a group of 40 west Berliners listening to a west Berlin loudspeaker van which had drawn up close to the border to broadcast news . winds blew the tear gas back across the border and someone in the crowd threw one of the grenades back , a police spokesman said . showing flag . meanwhile British , American and French troops , backed by tanks , to-day stood guard along the city &apos;s dividing line . the troops took station yesterday along the city sector boundary after the East German government introduced stringent new regulations for passage from one half of the city to the other . they remained on guard all night , and to-day British forces , with tanks and armoured cars , took part in their second show-the-flag exercise in three days . the Dutch and Swedish consulates in Berlin said to-day they had received reports that foreign residents in East Germany were having difficulties in leaving the territory . in east Berlin , foreign ministry officials said they had not heard of any new regulations banning foreigners from going to west Berlin . offices shut . no offices of the East German travel agency were opened in west Berlin to-day because the west Berlin city government refused permission , an East German railway official said . Moscow radio said in an English-language broadcast beamed at Britain that Whitehall is playing a dangerous game with fire across a powder magazine over the Berlin issue . such deeds are fraught with the danger of a military catastrophe in which Britain , too , would be involved , said the broadcast . threat to air corridor serious . Britain would regard any threat to the air communications with Berlin as an extremely serious matter , said a foreign office spokesman in London to-day . he had been asked about the Berlin air corridors which , it is understood , are referred to in the new Soviet note on the Berlin situation . he would not , however , make any official comment on the note itself . it is understood that the references on the air corridors introduces a new element into the situation , writes a diplomatic correspondent . being studied . the full text of the note was received by the foreign office to-day from the British embassy in Moscow . similar notes have been delivered to the United States and French governments . the notes are being studied by the three western powers and will also be discussed by the ambassadorial steering group in Washington , on which Britain , the U.S , France and West Germany are represented . according to the Soviet news agency Tass - quoted by Reuter - the Soviet government have protested in the notes against the use of the air corridors to west Berlin for subversive and revenge-seeking aims of West German militarists . provocative . the notes demanded that the western powers take immediate measures to end the unlawful and provocative activities of the West German government in west Berlin . the notes also said there had been a flagrant breach of the agreement reached in 1945 under which air corridors were set aside for the three western powers , on a temporary basis , to ensure the needs of their military garrisons , and not for subversive and revanchist purposes of West German militarism . Russia insisted that the western powers take immediate measures to put an end to the unlawful and provocative actions of the federal German republic in west Berlin . row flares at Berlin station . but Premier optimistic . tension in Berlin soared again to-day with angry protests over travel restrictions imposed by the East Germans and a threat by the west of necessary action . on the brighter side , Mr Macmillan gave an impromptu news conference on the Gleneagles golf course and said he thought no-one would fight over Berlin , and Mr Khrushchev was quoted as saying that he was willing to talk over the difficulties . the East German restriction which caused to-day &apos;s trouble concerned the issuing of permits for west Berliners wishing to travel to the east on the overhead railway . the western Commandants authorised the city government to take necessary action against the issuing of permits . angry west Berliners , shouting , get out , you pigs , gathered outside the Zoo railway station to-day after the East German officials who run it started issuing permits . six policemen kept the crowd of 50 to 60 people at a distance , but one woman who went up to the ticket window to get an application form for a permit was spat on by a fellow west Berliner . offices shut . finally the office was shut , along with a similar office at Westkureuz Station . the U.S Commandant in Berlin has made an oral protest to his Soviet counterpart concerning the illegal regulations issued by East German authorities in recent days and incidents arising therefrom . the 1st battalion the Welch regiment increased patrols on the border between the British sector of west Berlin and East Germany to-day to counter increased East German activity on the other side . Mr Macmillan , who is holidaying in Scotland , spoke to reporters on the 18th fairway of the golf course . he declared : Berlin is one of those things we have to be careful about - that nobody does anything foolish . risk of folly . I think there would be much more danger of war if weapons were not so destructive . fifty years ago we could have had a war . now it is not much fun for anybody . but there is always the danger of folly . I think the way it is going on is very worrying , but nothing more . to-morrow Mr Macmillan is to discuss the Berlin situation with Lord Home , the foreign Secretary , at Gleneagles . it was learned to-day that Lord Home will afterwards go to stay privately with Queen Elizabeth the Queen Mother at Birkhall . in Copenhagen , Drew Pearson , syndicated American newspaper columnist , said that Mr Krushchev had told him he was willing to meet western leaders as soon as possible . strongest protest over Caldon canal closure plan . urgent matter , say Cheadle R.D.C . Cheadle rural council &apos;s town planning and plans committee decided yesterday to protest in the strongest possible terms against the proposal to close part of the Caldon Canal between Hazelhurst New Locks and Froghall . later the full council endorsed this step as a matter of urgency . at their last meeting the committee were told by the deputy area planning Officer , Mr B Skelland , that it was planned eventually to reintegrate that section of the canal with the adjoining land . yesterday the committee were informed that the proposal to close the canal had been made by the British transport commission to the inland waterways redevelopment advisory committee . in a letter , the inland waterways protection society told the committee that in the case of each threatened canal , they carried out an inspection of every yard of the waterway and eventually submitted a scheme to the redevelopment committee showing how the canal under review could , if properly managed , be made to pay its way . claiming that their schemes had always been ignored , the society maintained that all details concerning the closing of the Caldon branch of the Trent and Mersey Canal were worked out years ago and were one further step towards the elimination of the inland waterways . the society pointed out that the present capital value of the Caldon Canal was in the region of &amp;pound;20 millions . alarmed . it was also reported that the service of youth scheme and Kingsley and Ipstones parish council were unanimously opposed to the proposed closure of the canal . the Froghall firm of Thomas Bolton and Sons Ltd , said they were alarmed at the possibility of the canal being closed , and the elimination of the water-feed from the canal to their works would have extremely serious consequences and might result in the closing of much plant unless satisfactory alternatives were provided . another firm affected by the proposed closure , W Podmore and Sons Ltd , of Shelton , who have a factory at Consall , pointed out that any extraction of water would seriously affect their interests . Brittains Ltd , of Cheddleton paper mills , said their own use of the canal had diminished over the years , and if the time came for disposal of parts of the canal , they would be very interested in considering the purchase of that portion which lay alongside their factory . the Chairman of the planning committee , Mr J H Aberley , recommended that the council should protest most strongly against the closure . he pointed out that the council were not in a position to put in a piped water supply to factories . lifeblood . Mr T P Brindley suggested that firms taking water from the canal should be asked to contribute towards its upkeep . instead of thinking of closing the canal , he said , steps should be taken to find out if the silt could be removed and the canal restored to its full industrial use , particularly as the railway was now closed to passenger traffic . Mr F R Ford commented : it is time this country spent a bit more money on canals . they are the lifeblood of some countries , and they can still do a lot for this country . he suggested that the money for reintegrating the canal with the adjoining land would be better spent in cleaning it up and making it usable again . Berlin puts blanket on bomb talks . British effort at Geneva . Mr David Ormsby-Gore , leader of the British delegation at the Geneva conference on the banning of nuclear tests , which started to-day , said before leaving London Airport : I am not very optimistic in the present climate . former Minister of state for foreign affairs , he added : but we mean to make a real effort to get the Russians moving again in these negotiations . he added that it would probably be his last attendance at the talks before taking up his fresh post as Britain &apos;s Ambassador in Washington in October . Mr Ormsby-Gore , asked if he was hopeful of a solution being found in view of the Berlin crisis , said : I think the general political atmosphere is not conducive to progress in any negotiations with the Soviet Union at the present time . I do not say it has eliminated any hope of settlement , but clearly the Soviet Union do not appear at the moment to be very interested in reaching any agreements with the west . deadlock . asked if the deadlock was likely to continue in the talks , he said : I do not know at all . it will depend upon the instructions Mr Tsarapkin ( the Russian delegate ) has brought back with him from Moscow . in the talks , the west were making yet another determined bid to try to get a nuclear test ban treaty with Russia . the U.S delegation , led by Mr Arthur Dean , are under instructions from President Kennedy to make the maximum effort to reach agreement with Russia . the talks began three years ago and have been deadlocked for the past five months . diplomatic observers said the biggest obstacle to agreement was the Soviet troika proposal , demanding that the international control organisation , which would police a test ban , should be headed by three administrators - one each from the communist , western and neutral groups - instead of one . Castro urges Brazilians : rise and fight old guard . fears attack on Cuban government . with events in Brazil leading to fears of anarchy , Dr Fidel Castro to-day urged the country to make use of the experience of Cuba and hurl itself into battle . 