hold the mirror up to nature

benjamin hill bloodhounds broadside seismic reflection profiling Clairaut's differential equation cross-grafted copolymer Cyathocrinina deep-sea sediment diethylmercury disk-blade cutter flat purl machine heterodyne interference least squares magnetic lifting device metamarket non-Newtonian liquid pisstivity prismatic high temperature gas cooled reactor scissorer sodium lead alloy taken down