INDEX 
TO THE 
PHILOSOPHICAL TRANSACTIONS 
FOE THE YEAE 1871. 
A. 
Aerolites, constituents of, 359 (see Maskelyne). 
Alkaloids, considered as substitutes for mineral bases, 12 (see Broughton). 
Arches, formation of some of the subaxial in man, 119 (see Callender). 
Attraction of earth’s crust, 335 (see Pratt). 
Australia, fossil mammals of, 213 (see Owen). 
B. 
Barclay (T.) and Gibson (J. C.), 573 (see Gibson). 
Broughton (J.). Chemical and Physiological Experiments on living Cinchonse, 1. — Occurrence of 
alkaloids in various parts of the plant, 2 ; state of combination in which they exist, 4 ; order in 
which they are formed, 6 ; influence of sunlight and heat on the growing bark, 8 ; alkaloids con- 
sidered as substitutes for mineral bases, 12. 
c. 
Calamites, 4 77 (see Williamson). 
Callender (G. W.). On the Formation of some of the Subaxial Arches in Man, 119. — The lingual, 
120; hyoid, 121 ; laryngeal, 121 ; thyroid body, 122 ; trachea, 123 ; shoulder-girdle, 123 ; expla- 
nation of plates, 126. 
Casey (J.). On Cyclides and Sphero-Quartics, 585. — Spheres cutting orthogonally, 585; generation 
of cyclides &c., 592 ; different forms of the equations of cyclides, 597 ; sphero-quartics, 602 ; 
inversion and centres of inversion, 618; projection of sphero-quartics, 630; foci and focal curves, 
634 ; anharmonic properties of the developable 2 and its reciprocal, 643 ; osculating circles of 
sphero-quartics, 649 ; classification of cyclides, 658 ; classification of sphero-quartics, 668; sphero- 
Cartesians, 677 ; substitutions, 684 ; poles and polars, 692 ; invariants and covariants of cyclides, 702. 
MDCCCLXXI. 5 P 
