Koch in 1876 published his observations on Davaine's bacilli, placed beyond doubt their causal relation to splenic fever, discovered the spores and the saprophytic phase in the life-history of the organism, and cleared up important points in the whole question (figs.
The observations of Darwin as to the fertilization of orchids, Primula, Linum and Lythrum, and other plants, and the part which insects take in this function, gave an explanation of the observations of Christian Konrad Sprengel, made at the close of the 18th century, and opened up a new phase in the study of botany, which has been followed by Hermann Miller, Federico Delphic) and others, and more recently by Paul Knuth.
The last phase in the history of the Caucasus was marked by the growth of the great volcanoes of Elbruz and Kasbek, which stand upon the old rocks of the central zone, and by the outflow of sheets of lava upon the sides of the chain.
The second phase in Leo's policy could only be accomplished with the aid of the Jesuits, or rather, it required the submission of the ecclesiastical hierarchy to the mandates of the Society of Jesus.
They were embarking on a new phase in their lives together, leaning on each other without becoming a burden.
A)ntinuous record of each phase in the volcanic changes has len taken, and some progress has been made in the study of te phenomena of Vesuvius; and in prognosticating the occurnce and probable intensity of eruptions.
Further, it is evident that account must be taken of the variation of phase in estimating the magnitude of the effect at P of the first zone.
But, as will be evident, the bright bands bordering the central band are now not inferior to it in brightness; in fact, a band similar to the central band is reproduced an indefinite number of times, so long as there is no sensible discrepancy of phase in the secondary waves proceeding from the various parts of the same slit.
V.; The Cell and some of its Constituent Structures, Science Progress (1897); Farmer and Moore, On the Melotic Phase in Animals and Plants, Quart.