278 bulletin: museum of comparative zoology. 



5. Upper Linsenschicht. 1 ft. = 15 ft. 



Zones 5 and 6 represent the Reval formation, 

 4. Two and one half feet of gray limestone with one foot 



of yellowish dolomite below it. 3 ft. 6 in. = 14 ft. 



3. Conglomerate with pebbles of green glauconitic lime- 

 stone. 6 in. = 10 ft. 6 in. 



Zones 3 and 4 represent the Kunda formation. 

 2. Green glauconitic limestone with most glauconite in the 



top layer. 7 ft. = 10 ft. 



1. Red calcareous sandstone with glauconite grains. 



Base not seen. 3 f t. = 3 ft. 



Zones 1 and 2 represent the Walchow formation. 



Church Jegelecht. (Village Joa on the Jaggoul road, west of 

 Reval. Section by Schmidt (47)). 



Upper Linsenschicht. .3 m. = 8.0 m. 



Vaginoceras limestone. 3.2 m. = 7.7 m. 



Lower Linsenschicht. .2 m. = 4.5 m. 



Glauconite limestone. 3.1 m. = 4.3 m. 



Glauconite sandstone. .8 m. = 1.2 m. 



Dictyonema shale. Base not seen. .4 m. = .4 m. 



Below Packerort light-house. (Two miles north of Baltish- 

 port. Measured by the writer). Plate 7. 



10. Heavy-bedded dolomitic limestone with few fossils. 

 Weathers dull yellow. Best exposed in the neighbor- 

 hood of Baltishport. Top not seen. 25 ft. = 80 ft. 1 in. 



9. Linsenschicht. 10 in. = 55 ft. 1 in. 



Zones 9 and 10 represent the Reval formation. 



8. Thick-bedded limestone, the bottom layer full of pebbles 

 of limestone and irregular fragments of phosphatic shale. 

 Kunda formation. 3 ft. 6 in. = 54 ft. 3 in, 



7. Thin-bedded limestone and shale. 1 ft. 3 in. = 50 ft. 9 in. 



6. Green limestone, very full of glauconite, especially at 



the base. 2 ft. 6 in. = 49 ft. 6 in. 



5. Soft, green sandstone. lift. = 47ft. 



Zones 5 to 7 represent the Walchow formation. 



4. Dark clay-shale, weathering to a light gray. Some 

 layers contain numerous graptolites. The shale rests 



