

REVIEWS. 323 
them to some future time, only now referring to our plate, 
where several forms of these beautiful plants are represented 
illustrating the grace and symmetry exhibited in these sim- 
ple organisms. 
EXPLANATION OF PLATE 5 
Fig. 1. om conjugating. Fig. 6. Mirai, subdividing or 
Fig. 2. Desmidium, side view growing. 
Fig. 3. Dutedtum. front view. Fe 7; PA subdividing or 
Fig. 4. Cosmarium. growing. 
Fig. 5. Cosmarium, conjugating, ui 8. Staurastrum. 
and forming a Sporangium . 9. Pediastrum. 
resembling the so called ie 10. PLOTT, 
Xanthidia found in flints 

REVIEWS. 
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E Tur Harris ConnEsPONDENCE.*— Well do we remember the mee 
a and lively interest we felt when for the first time we were allowed t 


taper of the Boston 8 
ee ce Correspondence of T. W. Harris, M. D. XTIID 
‘sional. of Natural . Boston, 
To telatof ihe Ne i i 

. 
