41.   The partisan jockeying illustrates the difficulties inherent in investigations into campaign fund raising.

42.   The police are conducting an investigation into the cause of the fire.

43.   The police will carry out an investigation into what actually happened.

44.   The quick response exemplified the aggressive way Republicans have sought to put the best face on the investigation into Gingrich.

45.   The Senator promised a thorough investigation into the fund-raising activities of both parties.

46.   There are also indications that the current criminal investigation into Barlow Clowes May prevent the most sensitive parts from being released.

47.   There is a herbarium, as well as a laboratory concerned with scientific research and investigation into plants and crop production.

48.   There is now an overwhelming case for the Government to undertake an urgent investigation into simplifying the structure of the benefits system.

49.   There will be a thorough investigation into the circumstances of her death.