SULPHUROUS ACID AND SULPHITES. 



871 



In the case of No. 9 there seems to be quite an increase in the num- 

 ber of hyaline casts during the preservative period, none being found 

 in the fore period and a very few in the after period. 



No. 10 shows a few casts in the first part of the preservative period, 

 very few at the second and third observations in the preservative 

 period and the first of the after period, and a few toward the end of 

 the after period. 



No. 1 1 shows extremely few casts in all the periods except the first 

 part of the preservative period, where a few are found. 



No. 12 shows a very few casts at all the observations except in the 

 first part of the after period. The numbers expressing relative occur- 

 rence are 90.9, 100.0, and 100.0, respectively, for the three periods, 

 which evidently indicate a slight increase of these casts during the 

 preservative period. 



FINELY GRANULAR CASTS. 



In the case of No. 1 these casts are observed only in very small 

 numbers in the first part of the after period. 



In No. 2 a similar amount are observed at the first and last obser- 

 vations of the preservative period and in the first of the after period. 



In the case of No. 3 a very few casts are observed in the fore period, 

 and in the case of No. 4 the same toward the end of the preservative 

 period. 



No. 5 shows a very few casts at the second observation in the pre- 

 servative period, and a few at the third observation, and a very few 

 in the first of the after period. 



No casts are found in the case of No. 6, except 'a very few in the last 

 part of the preservative period. 



In the case of No. 7 are found a very few casts in the first part of 

 the preservative period. 



No. 8 has a very few at only one examination, which is at the last 

 of the preservative period. 



In the case of No. 9 there are no casts in the fore period and a very 

 few at each of the other observations. 



No. 10 has no casts except a very few in the first and third parts of 

 the preservative period and the first part of the after period. 



In No. 11 are found a very few casts in the fore period and the first 

 and third parts of the preservative period, and the same observation 

 is true of No. 12. The figures expressing the relative occurrence of 

 these bodies show that there is quite an increase during the preserva- 

 tive period, the greater part of which occurs in the latter part of the 

 period. 



COARSELY GRANULAR CASTS. 



These do not appear in very great quantities in any part of the 

 observation. A very few are found in the first of the after period of 



