470 



• KNOAVLEDGE ♦ 



[May 29, 1885. 



<!^ur $nbnitor6' Column. 



We give here, rceeh by u'eeV, a terse descriptioji of such of the viany 

 inventions as ive think may he of use to our readers. Jl'liere it is 

 possible, the number of the patent is quoted, to enable those who 

 desire fuller information to procure the specification from the 

 Patent Office in Cursitor-street, Chancery-lane. We shall, gene- 

 rally speaking, confine ourselves to the more recent inventions ; but 

 it often happens that an article comes under our notice which, 

 although not quite novel, is ivorthy of mention for its utility and 

 ingenuity. In such a case we shotild not hesitate to refer our 

 readers to it. And while we thus increase the interest of our pages, 

 we at the same time assist the inventors by giving greater publicity 

 to their inventions (Knowledge being a popular magazine) than 

 is accorded by the most excellent trade i'lurnals 



THE RED CROSS POCKET AilBULANCE. 



Under this title Messrs. Russell & Everett have brought out, at 

 a very trivial cost indeed, a pocket case which the traveller can 

 scarcely fail, at one time or another, to find nseful, .and to the eon- 

 tents of -which he may even on an emergency be indebted for his 

 life. Its outside measurement is 6 in. by 3i in. by 1 in. Hence it 

 will be seen that " pocket " ambulance is no misnomer. It contains 

 the triangular bandage (the use of which is taught by the St. 

 John's Ambulance Association), a bos of antiseptic ointment, com- 

 press to stop bleeding, tape, pins, waxed thread, &c. The value of 

 so very portable a means of immediately dressing wounds, and 

 providing for accidents pending the doctor's arrival to the cyclist, 

 the ordinary tourist, the Volunteer, or the athlete, scarcely needs 

 insisting on. 



AN IMPROVED CASTOR. 



(Patent 2,447. 1884.) — Mr. Sprague, of 20, ParUameut-street, 

 Westminster, has invented a form of castor in which a solid or 

 hollow ball of iron or steel works in a socket of brass or other 

 material, from which it is prevented from falling out by the attrac- 

 tion of a steel horseshoe magnet, the poles of which are put through 

 holes in the cup, not more than one-half of the ball being covered by 

 the cup. The castor is attached by means of a flange, a mortise being 

 made to receive the magnet. The magnet may also be placed in a 

 horizontal position, and in some cases its ends may be expanded in 

 such a manner that a separate cup may be dispensed with. 



^ur Cftrsie! Column* 



By Mephisto. 



Ax interesting position of a game played recently at the City of 

 London Chess Club, Black having given the odds of Pawn and 

 move to White. 



B. G. Laws. 



Whitb. 



Black, 

 j. guksberg. 



It will be seen that the White P on KG terribly cramps Black's 

 game. Had White played P to QR3 he would have provided 

 against Black's Kt to R4. White would also thereby open up his 

 Book's file and maintain his strong position. Instead of this line of 

 play, which wonld probably have led to victoiy, Mr. Laws was 

 affected by the chance of making a combination — a mode of play 

 particularly agreeable to prodigious problem composers — the 

 result being that Black, although temporarily losing a Pawn, 



issued from the surprise with a more hopeful position, which 

 enabled him to draw. Moral — In match play, mistrust combina- 

 tions, however alluring and tempting, unless they yield a distinct 

 advantage. White's play was, however, both deep and pretty. He 

 played — 



P toB4 

 Q to Kt5 (ch) ! 

 B X P (ch) 

 BxKt (ch) 

 P X Q (ch) 

 P to B5 

 B to K3 

 P to QKt3 

 P to KKt4 

 Best. It forced White to exchange 



Kt to QR4 

 PxQ 



Kt to Q2 

 QxB 

 K to Q sq. 

 Et to B3 

 Kt to K4 

 Kt xP 

 Kt to B3! 

 Kt's, and Black succeeded in 



blocking White's Pawns, forcing a draw. 



Position after Black's 29th move, E to K sq., in a game played 

 some time ago between two provincial amateurs. 



C. Pakdoe. 

 Black. 



;'^%S 



■^ ^^ ••'"'•' m 



^ ml m§. Mi 



■m.......m.. 



Forced. If 

 R to R sq. 



35. 

 36. 

 37. 



White's play is 



Whitb. 

 O. H. Laeone. 



The game concluded as follows ; — 



30. P to K6 P X P 

 Black plays P to B3, White wins by 31. Q to Q7, 



32. Q to B7 (ch), K to E sq. 33. B to BS, &c. 



31. Kt to Eo! P to K4 



32. Q to Qo (ch) K to R sq. 



33. Kt X P E to KKt sq. 



34. Q X R (ch) K X Q 

 Kt to Bo (ch) Q to Kt3 

 Kt to K7 (ch) K to B2 

 ExQ 

 both forcible and elegant. The last move is 



particularly correct, and stronger than 37. Kt x Q, for after P x Kt, 

 Black has just that little amount of fight left which in some posi- 

 tions make it so difficult to realise the advantage of forces. This 

 move at once lessons the hope of playing for a draw. Black 

 ought, however, to have accepted the exchanges by replying with 

 RxR. 38. Kt X R, P X Kt. 39, K to Kt2, K to K3. 40. K to Esq., 

 K to Q4. 41. K to K2, P to B4, and attempt to advance the P's 

 on the Q side. 



37. R to BG 



In the hope of being able to gain the piece, and avoid exchanging 

 Rooks. 



38. E to BG (ch) 



An elegant device. If K x E, 39. Kt to Q,5 (ch) wins. 



38. K to Kt2 



39. B to Kt2 Resigns. 



Contents op No. 186. 



FAGS 



Meteors and Falling Stars. By B. A. 

 Proctor 427 



Oar Household Insects. {Jllv.9.) By 

 E, A. Butler 423 



Overhead Electric Wires. By W. 

 Slingo 429 



Thought and Language. IX. By 

 -AdaS. Ballin 4.30 



Chat? on Geometrical Measurement. 

 {lUua.) Bt R, a. Proctor 431 



Nobert's Ruling Machine, By John 

 Mayall, jim 133 



Chapters on Modem Domestic Eco- 

 nomy. XXVUI. (Illm.) 433 



FAGS 



Nervous Exhaustion. I. By Edwin 



Wooton 435 



Railway Plant at the Inventions 



Exhibition 436 



Evolution of the Sense of Beauty. 



By Constance C. W. Naden 437 



Origin and Home of the Diamond 



(Illns). By W, J. Harrison 439 



Editorial Gossip MO 



Reviews 441 



Face of the Sky. By F.B.A.S 442 



Correspondence 442 



Our Inventors' Coltunn 447 



Our Chess ColazQB 448 



