Stirling's report to Darling and Frazer's report on the quality of the land were enclosed with Darlings report of 21 April 1827 to the Colonial Office in the United Kingdom. Stirling's report consisted of a diary "Narrative of Operations" and a section "Observations on the Territory", which included a report by Clause on the healthiness of the climate. Later events showed that all three reports were over enthusiastic, the party having explored only the strip of soil in the vicinity of the "Swan". Frazer was heavily criticised for this later. However, in their defence, both Clause and Frazer were subject to Stirling's intense enthusiasm for the project and may have been unduly influenced by it. Stirling wrote a second report on the Swan River on 31 August. This was addressed to the Admiralty and was shorter, placing more emphasis on naval concerns and the strategic value of the area.