McL&od—The Walden Inversion—A Critical Review. 527 
XX. Cone, the rule for the addition of halogen compounds to unsat¬ 
urated acids. Michael: J. Pr. Ch. [1899] 10, 171. 
XXI. Action of sodium alcoholate on a hrom-fatty acid esters. Bis- 
choff: Ber. 32, 1748. Ber. 32, 1899. 
XXII. Studies cone, the behavior of the silver salts of the halogen 
subst. acids of the series C n H 2n C> 2 by heating with water and by 
themselves. 
Beekurts & Otto: Ber. 18, 222. W. H. Perkin: J. L. Ch. Soc. 
[1859] Vol. II, p. 25. J. L. Ch. Soc. [1877] Yol. 32, p. 90. 
XXIII. Studies in Organic Acids. Kekule: Ann. Suppl. 1, 129-138. 
Ann. Suppl. 2, 85. 
XXIV. Studies of TJnsaturated Acids. Fittig and Colaborators: De¬ 
composition of the substitution products of the lower fatty acids 
with water and with dil. sodium carbonate sol. 
1. Studies in unsaturated acids. Fittig: Ann. 200. 21. 
2. Fittig & Thomsen: Ann. 200, 75. 
3. Properties of methylacrylic acid. Fittig & Engelhorn: Ann. 
200. 65. 
4. ‘Hydrosorbinsaure und Sorbinsaure’. Fittig, Stahl, Lands- 
berg, and Engelhorn: Ann. 200. 42. 
5. ‘Brenzterebinsaure’. Bredt & Fittig: Onn. 200. 58. 
6. Cone, the addition products of cinnamic acids. Fittig & 
Binder: Ann. 195, 132. 
7. Phenylaminoproprionic acid. Fittig & Posen: Ann. 195, 143. 
8. Phenyllactimid. Posen: Ann. 200. 97. 
9. Addition of hydrogen bromide to brenzterebinsaure.’ Fittig 
& Geisler: Ann. 208, 44. 
10. Teracrylic acid and heptolactone. Fittig & Kraft: Ann. 
208, 86. 
11. The crotonic acids resulting from citraconic and mesaconic 
acids. Fittig & Prehn. Ann. 188, 142. 
12. Also Ann. 188, 87—Fittig & Dorn. Ann. 143, 343—Glaser. 
Ann. 206, 27—Fittig & Kast. Classed under other subdivi¬ 
sions. 
