147. Discharge Tube Immersed in Oil. Rays TESLA Transmitted through Iron, Copper, and Brass, 1/4 in. Thick.

148. Bodies Not Made Conductors when Struck TESLA by X-rays.

Roentgen Rays and Phenomena of the Anode and Cathode. — Part 12

149. Non-conductors Made Conductors by a APPLEYARD Current.

Roentgen Rays and Phenomena of the Anode and Cathode. — Part 12

149_a_. Appleyard’s Experiment. Non-conductors Made Conductors by Current.

Roentgen Rays and Phenomena of the Anode and Cathode. — Part 12

150. Electrical Resistance of Bodies Lowered MINCHIN by the Action of Electro-magnetic Waves.

151. Sciagraphic Plates Combined with PUPIN, Fluorescent Salts. SWINTON, and HENRY.

152. Penetrating Power of X-rays Varies with THOMPSON, S. the Vacuum. P.

153. Reduction of Contact Potential of MURRAY Metals by X-rays.

154. Transparencies of Objects to X-rays Not NODON, Influenced by the Color. Detected by LUMIÈRE, Simultaneous Photographic BLEUNARD, and Impressions. LABESSE

155. Chlorine, Iodine, Sulphur, and MESLANS, Phosphorus Combined with Organic BLEUNARD, and Materials Increase Opacity. LABESSE

156. Application of X-rays to Distinguish BUQUET, Diamonds and Jet from Imitations. GASCARD, and THOMPSON, S. P.

157. Inactive Discharge Tubes Made Luminous DUFOUR by X-rays.

158. Non-refraction in a Vacuum. BEAULARD

159. Bas-relief Sciagraphs by X-rays. CARPENTIER and MILLER

160. Transparency of Eye Determined by WUILLOMENET Sciagraph of Bullet Therein.

161. Mineral Substances Detected in RANWEZ Vegetable and Animal Products.

162. Hertz Waves and Roentgen Rays Not ERRERA Identical.

163. Non-mechanical Action by X-rays GOSSART Determined by the Radiometer.

164. X-rays within Discharge Tube. BATTELLI

165. Combined Camera and Sciascope. BLEYER

166. Non-polarization of X-rays. THOMPSON, S. P., MACINTYRE

167. Diffuse Reflection. Dust Figures THOMPSON, S. Indirectly by X-rays. P.

168. Continuation of Experiments in § 113. LODGE

171. Resistance of Selenium Reduced by GILTAY and X-rays. HAGA

_Total number of sections to this place, 199._

200. Needle Located by X-rays and then HOGARTH Removed.

201. Needle Located at Scalpel by X-rays and SAVARY then Removed.

202. Diagnosis with Fluorescent Screen. RENTON and SOMERVILLE

203. Bullet Located by Five Sciagraphs. MILLER

204. Bones in Apposition Discovered by MILLER X-rays and afterward Remedied by Operation. Other Cases.

205. Application of X-rays in Dentistry. MORTON