June 1, 1894. 



KNOWLEDGE 



143 



Uranus is also an evening star, and but for his southern 

 declination would be well placed for the observer. He rises 

 on the 1st at 5h. lOm. p.m., with a southern declination of 

 15° 7', and an apparent diameter of 3-8". On the 30th 

 he rises at 3h. 15m. p.m., with a southern declination of 

 14° 54'. During June Uranus pursues a short retrograde 

 path to the N.W. of a^ a' Libr», being about 1' north of 

 a lOi^ magnitude star on the 22nd. 



There are no well marked showers of shooting stars 

 in June. 



The Moon is new at lOh. 56m. p.m. on the 3rd ; enters 

 her first quarter at Ih. 14m. p.m. on the 10th ; is fuU at 

 7h. 6m. A.M. on the 18th ; and enters her last quarter 

 at lOh. 3m. a.m. on the 2Gth. She is in perigee at 6h. 

 A.M. on the 5th (distance from the earth 223,620 miles), 

 and in apogee at uoon on the 20th (distance from the 

 earth 252,270 miles). At 9h. Om. p.m. on the 12th the 6th 

 magnitude star 58 Virginis will disappear at an angle of 

 187° from the north point, and reappear at 9h. 37m. p.m. 

 at an angle of 246°. At Oh. 41m. a.m. on the 14th the 

 6th magnitude star 13. A. C. 4700 will make a near ap- 

 proach to the northern limb at an angle of 23°, distance 

 about 2'. At ]lh. 20m. p.m. on the 14th the 6th magnitude 

 star B.A.C. 4923 will disappear at an angle of 175°, and 

 reappear at llh. 57m. p.m. at an angle of 232°. At 

 9h. 2m. P.M. on the 15th the 6th magnitude star B.A.C. 

 5197 will disappear at an angle of 108°, and reappear at 

 lOh. 23m. P.M. at an angle of 300°. At lOh. 46m. p.m. on 

 the 19th the 6th magnitude star B.A.C. 6628 will dis- 

 appear at an angle of 80°, and reappear at Oh. 8m. a.m. 

 on the 20th at an angle of 267°. 



d^tsn Column. 



By C. D. LooooK, B.A.Oxon. 



CoMMTjNioATioNs for this column should be addressed to 

 C. D. LococK, Burwash, Sussex, and posted on or before 

 the 12th of each month. 



Solution of Problem No. 17. 



Key -move — 1. R to Q3. 



. K X P, 2. Q to Kt3ch. 



. P to B4, 2. Q to Kt3. 



. KxR, etc. 2. Q to Q5ch. 



. PxPby2. RtoK3ch,or2. Q x RPch, 



or Q to Kt3. 

 K to B4 by 2. Kt x Pch, or 2. P to Kt3. 



If 1. 

 1. 



1. 

 Triple after 1 . 



Dual after 1. 



Solution of Problem No. 18. 



Key-move — 1. B to R2. 



If 1. ... KxR, 2. Q toBlch. 



1. . . . KtxR, 2. B to Q5ch. 



1. . . . Kt (Q8) moves, 2. R to K3 ( xKt) ch. 

 1. . . . B moves, etc., 2. R to Q4ch. 

 Dual after 1. ... Kt to R5 by 2. R to Q4ch or 2. B to 

 Q5ch. 



Solutions of Problem No. 19. 

 Twii Siilntians, viz. — 1. R to R5 (Author's), and 1. P to K6. 

 Correct Solutions received from the following : — 

 Fifteen Points. — Guy. 

 Fourteen Points. — Semper, B. G. Laws. 

 Tivetre Points. — A Norseman. 

 Eleven Points. — Chat, Kt. J. 



Nine Points. — E. W. Brook, L. Bourne, A. C. Challenger. 

 Eight Points. — J. H. Christie. 



No. 18 is correctly solved by H. S. Brandreth. 



Mr. De Morgan's Conditional Problem is solved by Chat, 

 W. Willby, E'. W. Brook, B. G. Laws, A Norseman, and 

 Guy. Strangely enough, it is pronounced unsolvable by 

 Semper. 



The solution is 1. Q to Q2, QxB; 2. P to B4ch, R 

 to Kt5 ; 3. Q X Q mate. 



It should be noted that according to the supplementary 

 rule, published in the December number of Knowledge, 

 the triple continuation in No. 17 does not score more than 

 an ordinary dual. 



J. H. Christie.— In No. 17, after 1. 

 to Q5, P to B4 is a good defence, 

 accordingly deducted from your score. 



A Norseman. — Your three letters and postcard containing 

 solutions were duly received. In No. 17 there is no dual 

 after 1. . . . P to Q3 (sie), but as the claim was un- 

 intelligible, nothing has been deducted for it. 



Gui/. — You are quite right to inquire how we knew that 

 the " Circle " was by a well-known composer. The sealed 

 envelope has not been opened, but the problem was 

 delivered to us by the hand of the composer in question, 

 whose handwriting happens to be familiar to us. We 

 assumed accordingly that it was his own composition. 



A. C. Cheillenijer. — Many thanks for the problems. 

 Both are excellent and will appear next month. 



. . K X P, 2. Q 

 One point was 



PROBLEMS. 

 By Mrs. W. J. Baied. 



Black (3). 



White (7). 



White mates in three moves. 

 By C. D. LococK. 



Black (3). 



White (5). 



White mates in two moves. 



