560 REPORTS OF AMERICAN OBSERVATORIES. 



(/) Chronograph : An electro-magnetic instrument by A. Clark & 

 Sons. 



{(j) Clods: 1 mean time; makers, E. Howard & Co., Boston ; 1 side- 

 real; makers, E. Howard & Co., Boston. 



(h) Chronometers : 1 sidereal; makers, W. Bond & Son, Boston. 



(i) Miscellaneous : A partial outfit of metereological instruments. 



III. Observations for the past year: 



Instruments just received. No regular work in observatory yet under- 

 taken, except the completion of a trial orbit for comet I of 1879. 



IV. Work proposed for the coming year (1879-80): 



1. A series of double-star measures, to determine personal equation. 



2. Observations on comets II and III, for 1879. 



3. Observations of the planet Jupiter, respecting the color of disc. 



4. Miscellaneous work, to aid State Astronomical Society; there being 

 no other instrument equal to our equatorial in the State. 



VI. Additional information: 

 One year ago our clocks were set and regulated ; since that time we 

 have had control of the time in this entire State, and parts also of Iowa, 

 Nebraska, Kansas, Dakota, and Missouri. When full* connections are 

 made, our noonday signal is directly distributed over 1,285 miles of wire, 

 thereby supplying each telegraphic station in all this wide area with the 

 daily time of our meridian. All the railroads (I believe) and the princi- 

 pal cities adopt our time. 



[Extracts from previously-published, information.] 



" CARLETON COLLEGE. — PLAN OF INSTRUCTION AND ORIGINAL WORK 



The main building of the new observatory is now completed, and is 20 

 feet square and 32 feet high. There are two wings, each 12 by 15 feet and 

 9 feet high, with flat roof. The east wing is for the astronomical library 

 and the observer's study. The west wing is used for the transit room 

 only. On the first floor of the main building is the instrument case, 

 table for chronograph, pier for astronomical clocks, and circular stair- 

 way loading to the equatorial room in the dome. 



The central equatorial pier starts 9£ feet below the ground, has a foot- 

 ing of large flat stone, is" built circular, with a diameter 8 feet, and is 

 laid of solid masonry in cement to a height of 5 feet above the ground. 

 Prom the footing it is curbed with dry stone way to the surface of the 

 ground, that it may stand independent. Above it is built of brick in 

 circular form to the upper surface of the second floor, and capped with 

 a stone 3i feet in diameter and 8 inches thick. The entire height of the 

 pier is 20 feet. The pier for the transit instrument is made in a similar 

 manner, except that it is rectangular in shape. 



The second story of the building is devoted to the equatorial room, 



