Abstract: The use of compounds of the formula I ##STR1## in which R.sup.1 -R.sup.6, A, B und X have the meaning given in detail in the description, for controlling house dust mites.The miticide has a high miticidal effect against house dust mites of Tyrophagus, Dermatophagoides, Cheyletidae, etc. and is harmless to humans and beasts. It is effective not only in exterminating such house dust mites but also in preventing from them.

Abstract: The invention relates to insecticidal compositions which compriseA) inorganic or organic ammonium salts of the formula I ##STR1## in combination with at least one compound from the group consisting of the compounds silafluofen (4-ethoxyphenyl-?3-(4-fluoro-3-phenoxyphenyl)propyl!dimethylsilane), MTI-723, imidacloprid, ethofenprox (Trebon, MTI-500, (2-(4- ethoxyphenyl)-2-methylpropyl-3-phenoxybenzyl ether), PP 682 (ICI-A5682), T1304, natural or synthetic pyrethroids and phosphorothioates.

Abstract: Acaricidal, insecticidal and nematicidal substituted (hetero)arylalkyl ketone oxime O-ethers, processes for their preparation, agents containing them, and their use as pesticides.The invention relates to compounds of the formula ##STR1## in which Ar.sup.1 and Ar.sup.2 are aryl or heteroaryl, each of which is optionally substituted, and R is an optionally substituted aliphatic or alicyclic radical, to processes for their preparation, and to agents containing these compounds, and to their use for controlling animal pests.

Abstract: The invention relates to insecticidal compositions which compriseA) inorganic or organic ammonium salts of the formula I ##STR1## in combination with at least one compound from the group consisting of the compounds silafluofen (4-ethoxyphenyl-?3-(4-fluoro-3-phenoxyphenyl)propyl!dimethylsilane), MTI-732, imidacloprid, ethofenprox (Trebon, MTI-500, (2-(4-ethoxyphenyl)-2-methylpropyl-3-phenoxybenzyl ether), PP 682 (ICI-A5682), TI304, natural or synthetic pyrethroids and phosphorothioates.

Abstract: Acaricidal, insecticidal and nematicidal substituted (hetero)arylalkyl ketone oxime O-ethers, processes for their preparation, agents containing them, and their use as pesticides.The invention relates to compounds of the formula ##STR1## in which Ar.sup.1 and Ar.sup.2 are aryl or heteroaryl, each of which is optionally substituted, and R is an optionally substituted aliphatic or alicyclic radical, to processes for their preparation, and to agents containing these compounds, and to their use for controlling animal pests.

Abstract: A photoendoscope comprising a telescope tube defining, near its distal end a viewing port, flash-tube assembly means connected to the distal end of the telescope tube and including a flash-tube proper enveloped in transparent protective sheath means arranged in a housing defining an aperture for transmitting light from the flash-tube proper and light conductor means extending along the telescope tube and terminating proximally of said viewing port, a barrel enclosing said telescope tube and said light conductor means at least in their distal end regions, and said flash-tube means, said barrel defining two apertures aligning respectively with said viewing port and with said flash-tube light transmitting aperture, and a transparent cylindrical sheath which is secured in said barrel, which extends for approximately the length of said flashtube proper and which covers said flash-tube light transmitting aperture, said transparent cylindrical sheath having a wall thickness which is greater where it covers said flas