| One of these should be a 60-pound and the other an 80-pound manila paper, both guarded entirely around the fold with jaconet. |
| Fly-leaves should be made of white book paper, 70 pounds to the ream and guarded with jaconet. |
| If book is not oversewed the first and last sections must be guarded with jaconet. |
| Fly-leaves should be made of white book paper, 80 pounds to the ream, guarded with jaconet on both sides. |
| Cut a guard of jaconet or bond paper three-fourths of an inch wide and as long as the book. |
| Guarding with jaconet prevents the threads which lie in the middle of the signatures from pulling through the paper. |
