PLANISTON—(1) The Five Thousand Kilometre (overland) was won last year by L. V. Rautsch; R. M. Rautsch, his brother, in the same week pulling off the Ten Thousand (oversea). R. M.'s average worked out at a fraction over 500 kilometres per hour, thus constituting a record. (2) Theoretically, there is no limit to the lift of a dirigible. For commercial and practical purposes 15,000 tons is accepted as the most manageable.

PATERFAMILIAS—None whatever. He is liable for direct damage both to your chimneys and any collateral damage caused by fall of bricks into garden, etc., etc. Bodily inconvenience and mental anguish may be included, but the average courts are not, as a rule, swayed by sentiment. If you can prove that his grapnel removed any portion of your roof, you had better rest your case on decoverture of domicile (see Parkins v. Duboulay). We sympathize with your position, but the night of the 14th was stormy and confused, and—you may have to anchor on a stranger's chimney yourself some night. Verbum sap!

ALDEBARAN—(1) war, as a paying concern, ceased in 1987. (2) The Convention of London expressly reserves to every nation the right of waging war so long as it does not interfere with the traffic and all that implies. (3) The A. B. C. was constituted in 1949.

L. M. P.—(1) Keep her full head-on at half power, taking advantage of the lulls to speed up and creep into it. She will strain much less this way than in quartering across a gale. (2) Nothing is to be gained by reversing into a following gale, and there is always risk of a turnover. (3) The formulae for stun'sle brakes are uniformly unreliable, and will continue to be so as long as air is compressible.

PEGAMOID—(1) Personally we prefer glass or flux compounds to any other material for winter work nose-caps as being absolutely non-hygroscopic. (2) We cannot recommend any particular make.

PULMONAR—(1) For the symptoms you describe, try the Gobi Desert Sanatoria. The low levels of most of the Saharan Sanatoria are against them except at the outset of the disease. (2) We do not recommend boarding-houses or hotels in this column.

BEGINNER—On still days the air above a large inhabited city being slightly warmer—i.e., thinner—than the atmosphere of the surrounding country, a plane drops a little on entering the rarefied area, precisely as a ship sinks a little in fresh water. Hence the phenomena of “jolt” and your “inexplicable collisions” with factory chimneys. In air, as on earth, it is safest to fly high.

EMERGENCY—There is only one rule of the road in air, earth, and water. Do you want the firmament to yourself?

PICCIOLA—Both Poles have been overdone in Art and Literature. Leave them to Science for the next twenty years. You did not send a stamp with your verses.

NORTH NIGERIA—The Mark Boat was within her right in warning you off the Reserve. The shadow of a low-flying dirigible scares the game. You can buy all the photos you need at Sokoto.