Astronomy. 157 
judicious improvement in a journal already so ably and satisfac- 
torily conducted, and so etalon eh approved by naturalists, can- 
not fail to please the former subscribers, and secure new ones 
and considering the small amount of microscopic literature pub- 
lished in this country, a8 compared with the amount of work act- 
ually done by our inioroscopists, and the very general inverest in 
the subject, it is a change in every way desirable. 
8. Anatomisch-systematische Bewthiheiiang der Ale, yoncnian 
erste Abtheilung; * Pennatuliden, zweite fratee tos erstes Heft, mit 
vii Tufeln; by A. K ueticnss Frankfort, 1871.—In this part of Dr. 
Kdlliker’s ‘eceallont we almost exhaustive oak upon the Pennatu- 
lians, he describes and illustrates the genera, Halisceptrum, Virgu- 
laria (15 species), Stylatula fe Ape Acanthoptilum, anew genus 
founded upon two species e Gulf-stream oe of 
Pourtales, Seytalium, Paaewe, "Halipter is, and Fun 
arge part of the work is devoted to descriptions of t the ees 
omy and histology of the various genera and ae 
19. Lllustrated Catalogue of the Museum of Dowgeniisite Zook. 
ogy. No. VI. eg to oe Ophiuride and esi We de 
efer 
. Stellar Photography.—W e are ad 
oa Viberalit of members rs of his own, =: his wife’s amily, means 
h 
which convey to all paete ue ~ _ BD. of the fn dep 
a scien 
grapher, after spending som ahi in a observatory 0 of Mr, Ruth- 
catalogue and maps of all the stars visible to the naked eye on 
the clearest nights, together with a ayn ape of their poreone. 
Vv 
previously been known. For instance, Reaslandes found from the 
North Pole to 30° S, 3256 stars visible to the naked eye; and Dr. 
Gould has already found from the South Pole to 10° N. 4600. To 
do this the sky has been divided into seventeen maps, ‘and he and 
his four assistants have labored night and day in mapping and 
