24-4 Scientific Intelligence. 
7. Dr. Grorce Encetmann.—Just as these pages were going 
to the press we are grieved to learn that our oldest associate and 
friend, the most venerable and eminent of our botanists, who had 
attained his 75th birthday on the second of February, died on 
the eleventh, at his ona in St. Louis, after a short illness. Al- 
though his health became seriously impaired a year or two ago, 
et it was of late so far restored that he was able to continue his 
botanical work with zeal and vt aie se and the very last num- 
_ ber of this Torna soutétned a notice of a recent publication 
which gave evidence of this. It must be left to a future pape 
to place upon recor ind some account $4 his life and of his many 
and important contributions to science A. rr ; 
Ill. Astronomy AND MATHEMATICS. 
1. Double Star observations made in 1879 and 1880 with the 
183-inch refractor of the Dearborn Observatory, Chicago ; by 5. 
W. Bornuam.—This reprint from the memoirs of the Roy. Astr. 
Soc. contains Mr. Burnham’s thirteenth catalogue of new TFoable 
a and measures of 770 other 
Class II. Total, 
5s aN a extaloge of pot stars, 268 264 520 
154 63 re 
“ Pe «“ 91 314 , 405 
He tain 98 1 g12 * 12 24 36 
Herschel, It, * 3429 2 20 22 
n G. Cla 14 1 10 
All other observers, : 40 75 
Hence, he concludes that the known pairs having a distance 
under Pu are less than 1400. The principal interest moe in “ 
futtire he believes belong to these close pairs. Double star 
below the 8th magnitude and having a distance exceeding 5 will 
nat prove of much interest. as 
Way has furnished to Mr. Burnham a larger Dune” 
ber of new doubles than the same area elsewhere. In magnitude 
of leading component the thousand stars are distributed is 
ollows y 
00 to 10, 2 8"I to 47-0, 11 "1 to 70, 173 9"0+ 69 
Il to 2°90 
2"-1 to 3-0, 11 5") to 60, 94 to 9-0, 300 Total, 1000 
Particular attention se called by Mr. Burnham to the oe 
couple O 2 535, (6 an lei). The two close compere’ of this 
triple star are so n aay equal in iceuenads that severa 
whose period is 10°8. years. The distance is pres mo: 
ot ee 
6"'1 oa 
Oe 58 41 to 5” 0, 29. 71 to 8"-0, 303 el ‘ 
81 i 
