Alien Registration- Morehouse, W Oral (Fort Fairfield, Aroostook County)

https://digitalmaine.com/alien_docs/36483/thumbnail.jp

Observations of the Total Solar Eclipse of June 8, 1918, at Matheson, Colorado

The Drake University Observatory eclipse expedition occupied a very favorable site at Matheson, Colorado. It was wholly through the courtesy of Dr. Edwin B. Frost, Director of the Yerkes Observatory, who with Prof. E. E. Barnard, had selected this station as one of two very desirable locations, that the expedition was so happily situated

Photographic Accessories of the Drake Observatory

The application of photography to astronomical research is one of the great achievements of science. While the pioneering experiments date back to the days of Dr. J. W. Draper and Warren de la Rue, the vastly interesting and valuable results belong to the present decade. Astro-physics, the new-born child of Astronomy\u27\u27, owes its phenomenal growth and development, if not its birth, to the photographic lens and camera

Notes on the Chemotherapy of Hexarnitiasis

A method for controlled evaluation of drugs against Hexamita meleagridis in turkeys is presented. Experiments evaluating selected drugs and reevaluating all compounds and antibiotics previously reported to be efficacious against this species are described. Most of these compounds were tested against two separate isolates of this parasite, one from Indiana (1950) and the other from Wisconsin (1959). All preparations found effective against one isolate showed similar efficacy against the other. Conversely, preparations ineffective against one isolate were also ineffective against the other. Among the compounds showing efficacy were several antibiotics and dibutyl tin salts. Dibutyl tin dilaurate was found to have suitable efficacy at non-toxic dosage levels

Rapid Divergence of Wing Volatile Profiles Between Subspecies of the Butterfly Pieris rapae (Lepidoptera: Pieridae)

Complex signaling traits such as pheromone profiles can play an important role in the early stages of reproductive isolation between populations. These signals can diverge along multiple trait axes, and signal receivers are often sensitive to subtle differences in signal properties. In the Lepidoptera, prior research has highlighted that natural selection can drive rapid chemical signal divergence, for instance via mate recognition to maintain species boundaries. Much less is known about the occurrence of such changes for predominantly sexually selected chemical signals, such as those released by many male lepidopterans. We evaluated the divergence in male and female wing volatile profiles between two recently isolated subspecies of the pierid butterfly Pieris rapae Linnaeus (Lepidoptera: Pieridae): P. rapae rapae and P. rapae crucivora. In laboratory settings, these subspecies exhibit strong premating isolation, with females rejecting males of the opposite subspecies despite the fact that males direct equivalent courtship effort toward females of either subspecies. Using gas chromatography–mass spectrometry, we analyzed the volatile chemical profiles of individual males and females of each subspecies. We find that males of each subspecies differ in their wing volatile profiles, including quantitative differences in a male sex pheromone, ferrulactone. In contrast, female wing volatiles profiles have diverged significantly less. These sexspecific patterns suggest that male chemical profiles may play a role in the observed premating isolation between these two subspecies, providing support for future investigations of sexually selected chemical traits in population divergence

The Hysteresis Loop

It is not proposed to introduce a new method for the determination of the hysteresis loop, but to introduce some advantageous modifications. The method is similar to the ring ballistic method outlined by Dr. R. A. Millikan. This method has the advantage over the old magnetometer method in that the lines of force are continuous through the iron. It cannot be used however if the iron is hard and causes any creeping

Star Count in the Dark Ring Nebula in Cygnus

To our knowledge the first time this Bird\u27s Nest marking was considered as a possible ring of absorbing nebulosity was in 1910 when the senior author noticed the object and mentioned the possibility that it might be an actual ring of dark absorbing nebulosity. The ring is conspicuously evident upon every exposure of long enough duration to exhibit such markings. It is located in the Labrador section of the North America Nebula, right ascension 20 hours, 52 minutes, declination plus 45 degrees. Its external diameter is about thirty minutes of arc and its internal diameter about twelve minutes of arc

The Address of the President - The Cosmology of the Universe

Astronomy is the original science. Its scope comprehends all the physical sciences - geology, physics, chemistry - and even the natural sciences. All borrow from it, and in turn contribute to astronomical knowledge. Moreover, from the very beginning, the study of astronomy has been inseparably connected with philosophy and religious speculation. For its theme - its age-long objective - has been a true world concept. I quote: Back of every religion, and of every philosophy or science, worthy of the name, lies a world-view, a concept in which are included all localities and all beings supposed in that religion or philosophy or science to exist. In proportion to its clearness and completeness it, in every case, groups and mentally pictures these localities and beings in certain relations to each other, and thus also in their total unity as a universe. The science which critically investigates and expounds the world-view of any people or of any system of doctrine is called cosmology