“ Glasgow, July 13, 1806.
“Finds that the letter founded on by the pursuer, is not a letter in re mercatoria , in so far as regards the furnishings made to Simpson and Co. prior to the date of it ; but is a proper cautionary obligation for payment of a debt already due. Finds that the letter is a sufficient guarantee for the subsequent articles of the account, which were all furnished within twelve months after the date thereof. Finds that the two first articles of the account, furnished prior to the date of the letter, amount together to the sum of£229 , 17s. 5d. Sustains the defences pleaded for the said defender, and assoilzies him from the action, so far as regards these two articles, and decerns; but repels the defence, quoad ultra , and finds the defender, Adam Wright, liable to the pursuers for the amount of the other articles of the account, being£391 , and for the interest thereof, from the period libelled, and in time coining, during the non-payment, and decerns.”
“In respect it is admitted that the two first articles of the account pursued for, and from the claim for which the respondent stands assoilzied by the interlocutor brought under review, were furnished by the representer to Simpson, previous to the date of the respondent's letter of guarantee to the representer Simpson—Finds, that the said letter can be considered in no other light than as a cautionary obligation by the respondent (appellant) to the representer, for the amount of these two articles; finds, that a cautionary obligation for a debt already and actually due, cannot be held to be in re mercatoria , or to be validly constituted by a writing defective in the legal solemnities. And as it is not