Art. XX. — On the Philosophy of Language, By Emeritus Professor Blackie, F.R.S.E. 

 Read April 7, 1884, ........ 



XXI. — The Old Red Sandstone Volcanic BocJcs of Shetland. By B. N. Peach, Esq., 

 F.R.S.E., and John Horne, Esq., F.R.S.E. Read March 17, 1884. (Plates 

 XLV. and XLVI), . . 



XXII. — Observations on a Green Sun and Associated Phenomena. By Professor C. Michie 



Smith, F.R.S.E. Read July 7, 1884. (Plate XLVIL), . .389 



XXIII. — An Example of the Method of Deducing a Surface from a Plane Figure. By 



Professor L. Ckemona, LL.D. Edin., Hon. F.R.SS. Lond. and Edin., . . 411 



The Transactions of the Eoyal Society of Edinburgh will in future be Sold 



at the following reduced Prices : — 



Vol. 



J 'rice to the 



Price to 



Vol. 



Price to the 



Price to 



Public. 



Fellows . 



Public 





Fellows . 



I. II. III. 



Out of Print. 







XXI. Part 3. 



£0 7 







£0 5 3 



IV. 



£0 9 



£0 7 







„ Part 4. 



18 







13 6 



V. 



11 



9 







XXII. Part 1. 



1 5 







1 1 



VI. 



11 6 



9 



6 



„ Part 2. 



10 







7 6 



VII. 



18 



15 







,, Part 3. 



1 5 







1 1 



VIII. 



17 



14 







XXIII. Part 1. 



15 







11 6 



IX. 



1 



17 







„ Part 2. 



1 15 







1 8 6 



X. 



19 



16 







,, Part 3. 



1 18 







1 10 



XI. 



14 6 



12 







XXIV. Part 1. 



1 5 







1 1 



XII. 



14 6 



12 







„ Part 2. 



1 8 







1 3 



XIII. 



18 



15 







„ Part 3. 



1 10 







1 5 



XIV. 



1 5 



1 1 







XXV. Part 1. 



18 







13 G 



XV. 



1 11 



1 6 







„ Part 2. 



2 2 







1 11 



XVI. ) 

 Part 1. J 



5 



4 







XXVI. Part 1. 



1 







16 



„ Part 2. 



1 4 







1 



Part 2. 



18 



14 







„ Part 3. 



16 







12 6 



Part 3. 



10 



7 



6 



„ Part 4. 



12 







9 6 



Part 4. 



5 



4 







XXVII. Part 1. 



16 







12 



Part 5. 



7 



5 



6 



„ Part 2. 



6 







4 6 



XVII. 



Out of Print. 







„ Part 3. 



1 1 







16 



XVIII. 



2 2 



1 11 







„ Part 4. 



1 







16 



XIX. \ 

 Part 1. j* 



2 2 



1 11 







XXVIII. Part 1. 



1 5 







1 1 



„ Part 2. 



1 5 







1 1 



Part 2. 



18 



15 







„ Part 3. 



18 







13 6 



XX. \ 



Part 1. j 



18 



14 







XXIX. Part 1. 



1 12 







/l 6 



„ Part 2. 



16 







12 



Part 2. 



10 



7 



G 



XXX. Part 1. 



1 12 







1 6 



Part 3. 



10 



7 



6 



„ Part 2. 



16 







12 



Part 4. 



10 



7 



G 



„ Part 3. 



5 







4 



XXI. ) 



15 



11 



6 



XXXI. 















Part 1. / 



XXXII. Part 1. 



1 







16 



Part 2. 



10 



7 



6 



„ Part 2. 



18 







13 6 



PRINTED I1Y.NEILL AND COMPANY, EDINBUJtCJII. 



