Shortly after the conclusion of the war there was appointed in _Prussia_ a further Commission of medical and military authorities to renew the investigation into the care and transport of sick and wounded. The Commission sat from March 18 to May 5, 1867. In the result it still favoured the use of sacks of straw, with canvas loops, as the simplest and most comfortable method to adopt for the rail transport of recumbent sufferers, though it recommended that the sacks should be made with side pieces, giving them the form of paillasses, as this would afford a greater degree of support to those lying on them. The American system of suspending stretchers in tiers by means of india-rubber rings depending from pegs let into wooden uprights was disapproved of, partly because of the continuous swinging of the stretchers so carried, and partly because of the assumed discomfort to one set of patients of having others just above them. The report also recommended the adoption of the following principles:--(1) Through communication between all the carriages employed in one and the same train for the conveyance of sick and wounded; (2) provision, for the severely wounded, either of beds with springs or of litters suspended from the roof or the sides of the carriages; and (3) extra carriages for the accommodation of doctor, nurses, surgical appliances, medical stores, cooking utensils, etc. These principles were subjected to various tests, and it was found that in Germany the existing carriages which could best be adapted to the desired purpose were those belonging to the fourth-class, inasmuch as they had no internal divisions or fittings, travellers by them being expected either to stand during the journey or to sit on their luggage. The only structural alteration necessary was the placing of the doors at the end of the carriages instead of at the sides, so that, on opening these end doors, and letting down a small bridge to be provided for the purpose, access could readily be obtained from one carriage to another. Instructions were accordingly given that all fourth-class carriages on the Prussian railways should thenceforward have end doors--an arrangement which had, in fact, already been adopted in South Germany. Steps were also taken in Prussia to adapt goods vans and horse boxes for the conveyance of sick and wounded in the event of the number of fourth-class carriages not being sufficient to meet requirements.