Journ. Nat. Hist, and Sci. Soc., W.A. Vol. V- Plate XXIII. 
From Sir G. Darwin's book on Tides, etc. 
Figs, i and 2. — Maclauren's Spheroids. 
Figs. 3 and 4. — Jacobi’s Ellipsoid. 
F'ig. 5. — Planetary p'orm coalescent 
with Elongated Form, lust 
stable. 
Fig. 6. Plat Unstable Form. 
Fig. 7. — Limiting Maclauren’s Figure. 
F'ig. 8. — Poincare’s F'igure. 
Figs. 9 and 10. — Hour-glass Figure 
of Equilibrium. 
