410 
science ; and though her book is pretty, it cannot he re- 
garded as in any way authoritative. It is, however, vastly 
superior to Mr. Jahez Hogg’s treatise on the microscope in 
all that relates to zoology, and may, we hope, take the place 
of that very inaccurate production. We can best illustrate the 
curious naivete, exhibited by the venerable authoress in a 
quotation. “Numerous instances,” she says, “of microsco- 
pic structure may be found in the vertebrate series of marine 
animals, but the field is too extensive for the author to 
venture upon.” True, Mrs. Somerville, numerous, very 
numerous, instances may he found, and certainly the field 
is rather a large one. “ The life history of the lower classes,” 
adds the authoress, a few lines farther on, “ of both kingdoms 
has been a triumph of microscopical science.” 
We commend these volumes to the reader in spite of the 
defects mentioned ; not their least attraction being that they 
are from the pen of the authoress of the “ Connection of the 
Physical Sciences.” 
