A rundown of a representative g r o u p of such issues < see table at left ) s h o w s more g a i n s tlian losses during t h e first half of 1956, with not a few of t h e tips l»eiiig q u i t e sizable. But t h e showing is n o t all one way. T h e volatility of unlisted stocks can h e laid in part t o tlie fact that they ffifiaraaH frequently a r e less popular with in vestors. Many unlisted firms a r e not * f Chang* Bid Price nearly so well k n o w n by investors and Ι fn un frtun the. yO. V*56 a r e smaller o r i«ess seasoned than the m Dec. ΛΟ 1!*.">β Hi ah ii« >r> Recent High b l u e c h i p shares which g e t a large part Ο 52 52 + 47 35V4* of t h e attention o f Wall Street. Cutter Labs. 9% — 12 7V2 8V2 — 21 But in most oases^ t h e performance Foote Mineral 11 42 56^ 50 + 19 — IO of individual stocks, whether listed or General Aniline & Film 136 115 151 + 18 — unlisted, can b e tied to specific corpo Gulf Sulphur 18 15 11 — 15 1314 — r a t e developments. Ionics 21 1034 8V2 61/4 4- 36 — E l i Lilly E h Lilly, for one, h a s favorable news 63 65 V2 36V 2 + 73 — 4 — 9 Lithium Corp. 3 54 35 t o point to. I t s earnings for t h e first 37V4 — 2Q3 / 4 Mallinckrodt -f 2 6 41 57V 2 t h r e e months of 19S6 w e r e more than — 182 241/2 Metal Hydrides 21 21V2 —62 + 2 d o u b l e net for last year's first quarter, M e x i c a n Gulf S u l p h u r 3V4 — 62 8V2 SVz — 12 leaping from 51 cents a share t o a rec 3l3/4 P a n American Sulphur 341/4 28V 2 — 10 — ό o r d $1.06. Recent acquisition of Corn G. D . Searle 48 3 6 V2 ·+- 32 511/4 — Ο States Laboratories t o provide an out Smith, Kline & French 64 64 + 20 4θΛ2 let for veterinary p r o d u c t s h a s been Strategic Materials 30 48 31 4- 3 —35 52 ο TJ. S.- P o t a s h 49 followed by a n expansion of Lilly's agri 4- 3o 351/4 — cultural research t o cover nearly all j * A d j u s t e d f o r s t o r k split phases of farming. Note; O v e r - t h e - c o u n t e r bill pri