Error message

  • Deprecated function: TYPO3\PharStreamWrapper\Manager::initialize(): Implicitly marking parameter $resolver as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 19 of includes/file.phar.inc).
  • Deprecated function: TYPO3\PharStreamWrapper\Manager::initialize(): Implicitly marking parameter $collection as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 19 of includes/file.phar.inc).
  • Deprecated function: TYPO3\PharStreamWrapper\Manager::__construct(): Implicitly marking parameter $resolver as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 19 of includes/file.phar.inc).
  • Deprecated function: TYPO3\PharStreamWrapper\Manager::__construct(): Implicitly marking parameter $collection as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 19 of includes/file.phar.inc).
  • Deprecated function: session_set_save_handler(): Providing individual callbacks instead of an object implementing SessionHandlerInterface is deprecated in drupal_session_initialize() (line 245 of includes/session.inc).
  • Deprecated function: SelectQueryInterface::getArguments(): Implicitly marking parameter $queryPlaceholder as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3575 of includes/bootstrap.inc).
  • Deprecated function: SelectQueryInterface::preExecute(): Implicitly marking parameter $query as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3575 of includes/bootstrap.inc).
  • Deprecated function: SelectQueryExtender::getArguments(): Implicitly marking parameter $queryPlaceholder as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3575 of includes/bootstrap.inc).
  • Deprecated function: SelectQueryExtender::preExecute(): Implicitly marking parameter $query as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3575 of includes/bootstrap.inc).
  • Deprecated function: SelectQuery::getArguments(): Implicitly marking parameter $queryPlaceholder as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3575 of includes/bootstrap.inc).
  • Deprecated function: SelectQuery::preExecute(): Implicitly marking parameter $query as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3575 of includes/bootstrap.inc).
  • Deprecated function: DrupalEntityControllerInterface::resetCache(): Implicitly marking parameter $ids as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3575 of includes/bootstrap.inc).
  • Deprecated function: DrupalDefaultEntityController::resetCache(): Implicitly marking parameter $ids as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3575 of includes/bootstrap.inc).
  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in _ajax_register_ajax_links() (line 397 of sites/all/modules/ajax_register/ajax_register.module).

Ingredients

Primary ingredients for Roman glassmaking

Naturally colored glass is composed of 72% silica, 15% soda, 10% lime, and 3% other impurities. Beach sand, the main ingredient in glass, contains silica and lime, the latter component coming from crushed shells. There are two steps to producing naturally colored glass:

(1) melting the ingredients at a relatively low temperature (circa 750 degrees C) to obtain a white, granular substance (frit) that could easily be stored for later use;

(2) re-melting the frit in a far hotter furnace (circa 1150 degrees C), thereby transforming it into fluid glass.

Slavery in the Workforce
Natural Coloration