Laboratory Rearing of Phalangium Opilio (Arachnida: Opiliones)

While a good deal of work has been reported on the natural history and ecology of the opiliones in Europe and England (Bristowe, 1949; Sankey, 1949; Todd, 1949; Phillipson, 1959; Savory, 1964; Juberthie, 1965), this important group has received little attention in North America. Bishop (1949) published a concise synopsis of reactions and general habits of the opiliones of New York and, in a Ph. D. dissertation, Edgar (1960) described the biology of the order in Michigan. Current studies at Michigan State University on the effects of insecticides on non-target organisms have revealed an acute lack of biological information on the group, and before the effects of insecticides could be determined, life histories of the opiliones had to be clarified. Consequently, in 1966 a study of the ecology and rearing requirements of selected Michigan species was initiated. The present paper describes a new incubation technique for opilione eggs that shows promise of facilitating laboratory rearing of this group

Dual Mode Hydrazine Propulsion System

Dual mode hydrazine propulsion system for attitude control and maneuvering of interplanetary spacecraf

Simple Phase Bias for Superconducting Circuits

A phase-bias tool, based on a trapped fluxoid in a ring, is proposed and demonstrated. It can provide arbitrary phase values and is simple to fabricate. The phase bias has been realized in two superconducting quantum interference devices, where the critical current versus magnetic flux is shown to be shifted by a \pi/2 and \pi.Comment: 5 pages, including 4 figures. Submitted to AP