4 
4 
Geology and Mineralogy. 233 
16. Uniplanar Kinematics of Solids and Fluids, with applica- 
tions to the distribution and flow of electricity ; by EORGE 
Mincuin xford, 1882. 8vo, pp. 266.—Professor Minchin 
limits himself in. this book to motion which takes place in one 
plane or parallel to one plane. In fluids, for example, no displace- 
ments are supposed perpendicular to the plane ay. extension 
of uniplanar theorems and formulas to motion in three eames 
D amstiek small strains. In the treatment of es 8 
motion, oie the author has introduced new theorems, 
The last half of the yore is devoted to kinematics of fluids 
and notes. It will be appreciated by persons who undertake to 
zens Clerk-Maxwell’s Hctictity and Rape Ks daron to which it is 
admirable introduction. The style of Professor Minchin is 
i clear and concise. H. 
IJ. Grotocy AND MINERALOGY. 
1, Transactions of the Wisconsin Academy of eens, Arts 
and Letters Vol. Me 1877- 81. Madison, Wis.—Professor T. C. 
r it was formerly under he ae aad has leh es on its 
and passes around it to unite ag below, leaving it 8 
present action is concerned a non-glaciated area, surroun wed on 
all sides by active glaciation. It is stated that the resemblance 
l 
area the glacial debris thins out gradually and disappears in an 
obscure margin. Further, the As rdin lies on the lee sip of a 
Lisbon. The tracks are in involved a or aim ‘ds 8, hate moi § 
est 4 to 44 inches wide, and have the characters of Climatichnites 
of Logan. Mr. Todd names them C. Fosteri, and speaks of them 
as pegers | of animal origin. An excellent figure accom- 
panies the arti 
Am. Jour. — sittin Series, Vou. XXV, No. 147.—Mancu, 1883. 
