"The type of aeroplane for commercial work requires careful consideration and design. In estimating the value of a transport vehicle account must be taken of the respective proportions of the load that are and are not remunerative. A steam motor wagon that was only just able to transport the coke for its own consumption would be useless for transport work. The large quantity of fuel the aeroplane must carry makes this point an important one regarding it. It affects very largely the _type_ of aeroplane that must be chosen for each duty. "The total lift of a large bombing aeroplane of medium speed is about 20 lbs., while that of a small high-speed scout may not be more than about 8 to 10 lbs. per horse-power. From these lifts have to be deducted the weight per horse-power of the aeroplane structure and engines. These leave a margin of about 11 pounds per horse-power in the case of the large machine and of only about two to four pounds per horse-power in the case of the smaller and higher speed machine. From these margins have to be deducted the weight _per horse-power_ of the pilot and of the fuel to be carried." According to this expert's opinion there is little probability of using for commercial purposes the small high-powered aeroplane. But if large machines are used with a speed limit of 100 miles an hour and fitted with twin engines, Mr. Page thinks that such machines will have economic possibilities. Countries now far distant from one another can be brought close together. For example Australia will be within a week of London, and he thinks that passengers can be carried at the rate of about six cents a mile. If air transport is to be systematized he is in favor of strict state regulation: "There must be no possible chance of the wildcat schemes of the early railway days recurring, nor must aircraft or their pilots be below a specified standard. The State must see that projects doomed to failure owing to lack of financial or technical backing are prevented from being placed before the public. "Regulations must be drawn up which will insure that the machines cannot be used for the public service until they have received a certificate similar to that now issued by Lloyd's for ships. Pilots must not be allowed to fly machines conveying the public or mails, unless they have received a certificate equivalent to that issued to the master of a ship by the Board of Trade before he can take charge. "The aeroplane will not compete with the telegraph system, cable, or wireless, but will be a useful adjunct conveying written signed statements, important documents, long reports, and descriptive letters in the time of a week-end cable and at a fraction of the cost.