56 1250 [No information] S 1251 [Ducts ?] of latex from Euphorbia splendens; diluted [unintelligible] acid and [unintelligible] varnish S P 1252 Fiber of locust; with ashes of same S P 1253 Fiber of chestnut; with ashes of same S P 1254 Crystals of testa of seed of elm; Phl. Sod. 20.5.42 S P 1255 Hickory; [no material left on slide] S 1256 Crystals from Quillaia S P 1257 From Equisetum by strong nitric acid; does not polarize S P 1258 Silica from leaf of Olyra paniculata; does not polarize S P 1259 Silica from leaf of Arundo donax; does not polarize S P 1260 Silica from cuticle of Arundo donax; does not polarize S P 1261 Silica from cuticle of Ratonía; does not polarize S P 1262 Equisetum with NO5, then ignited; does not polarize S P 1263 Siliceous cuticle of Equisetum S P 1264 Silica from the glumes and awns of barley; does not polarize S P 1265 Silica from glumes and awns of barley S P 1266 Prickles from an awn of Aegilops S P 1267 Perianth on Nitella S P 1268 Silica from cuticle of Equisetum; English specimens S P 1269 Siliceous cuticle of Equisetum S P 1270 South Sea island fabric S 1271 Sections of [Cypeliger ?] knee; longitudinal and transverse - 2 coverglasses 1272 [No information] S 1273 Smut [?]; no. 12; parallel to fiber S 1274 No. 3; transverse [unintelligible] 1275 [No information]